Abstract

We studied the photoluminescence (PL) properties of (Ce + Yb) co-doped ZnO thin films as a function of high temperature annealing. The films were fabricated by magnetron sputtering. After 1000-1100°C annealing, the near band edge (NBE) emissions of the films were dozens to a hundred times stronger than that of undoped ZnO, while the Yb3+ emission (~980 nm) was quite weak, indicating that energy transfers from the ZnO host to Yb3+ ions in the films were not efficient. X-ray diffraction analysis and scanning electron microscopy observations demonstrated that the (Ce + Yb) co-doping had a large effect on the morphology and crystallinity of the films. The crystallinity enhancement of the films is considered to be the main reason for the strong NBE enhancements of the co-doped ZnO films.

© 2017 Optical Society of America

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  3. X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
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    [Crossref]
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    [Crossref]
  8. A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
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    [Crossref] [PubMed]
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    [Crossref]
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    [Crossref]
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    [Crossref]
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    [Crossref]
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    [Crossref]
  20. C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
    [Crossref]
  21. U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
    [Crossref]
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    [Crossref]
  23. M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
    [Crossref]
  24. W. E. Mahmoud, “Synthesis and optical properties of Ce-doped ZnO hexagonal nanoplatelets,” J. Cryst. Growth 312(21), 3075–3079 (2010).
    [Crossref]
  25. Y. Morinaga, K. Sakuragi, N. Fujimura, and T. Ito, “Effect of Ce doping on the growth of ZnO thin films,” J. Cryst. Growth 174(1), 691–695 (1997).
    [Crossref]
  26. N. Jiang, S. Ye, and J. R. Qiu, “Electron energy-loss spectroscopy study of Yb doped ZnO,” J. Appl. Phys. 108(8), 083535 (2010).
    [Crossref]
  27. S. Ye, N. Jiang, F. He, X. Liu, B. Zhu, Y. Teng, and J. R. Qiu, “Intense near-infrared emission from ZnO-LiYbO(2) hybrid phosphors through efficient energy transfer from ZnO to Yb3+.,” Opt. Express 18(2), 639–644 (2010).
    [Crossref] [PubMed]
  28. M. V. Shestakov, V. K. Tikhomirov, D. Kirilenko, A. S. Kuznetsov, L. F. Chibotaru, A. N. Baranov, G. Van Tendeloo, and V. V. Moshchalkov, “Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host,” Opt. Express 19(17), 15955–15964 (2011).
    [Crossref] [PubMed]
  29. J. Lin, Y. Fujita, and A. Neogi, “Saturation of two photon emission in ZnO nanoparticles with second order nonlinearity,” RSC Advances 5(15), 10921–10926 (2015).
    [Crossref]
  30. G. P. He, H. Q. Fan, and Z. W. Wang, “Enhanced optical properties of heterostructured ZnO/CeO2 nanocomposite fabricated by one-pot hydrothermal method: fluorescence and ultraviolet absorption and visible light transparency,” Opt. Mater. 38, 145–153 (2014).
    [Crossref]

2017 (2)

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

2016 (1)

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

2015 (5)

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
[Crossref]

J. Lin, Y. Fujita, and A. Neogi, “Saturation of two photon emission in ZnO nanoparticles with second order nonlinearity,” RSC Advances 5(15), 10921–10926 (2015).
[Crossref]

H. Dong, L.-D. Sun, and C.-H. Yan, “Energy transfer in lanthanide upconversion studies for extended optical applications,” Chem. Soc. Rev. 44(6), 1608–1634 (2015).
[Crossref] [PubMed]

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

2014 (6)

S. M. Ahmed, P. Szymanski, L. M. El-Nadi, and M. A. El-Sayed, “Energy-transfer efficiency in Eu-doped ZnO thin films: the effects of oxidative annealing on the dynamics and the intermediate defect states,” ACS Appl. Mater. Interfaces 6(3), 1765–1772 (2014).
[Crossref] [PubMed]

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
[Crossref]

L. Yang, J. Z. Dong, Z. C. Jiang, A. L. Pan, and X. J. Zhuang, “Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays,” J. Appl. Phys. 115(22), 224308 (2014).
[Crossref]

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

G. P. He, H. Q. Fan, and Z. W. Wang, “Enhanced optical properties of heterostructured ZnO/CeO2 nanocomposite fabricated by one-pot hydrothermal method: fluorescence and ultraviolet absorption and visible light transparency,” Opt. Mater. 38, 145–153 (2014).
[Crossref]

2013 (1)

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
[Crossref]

2012 (2)

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

2011 (2)

2010 (5)

S. Ye, N. Jiang, F. He, X. Liu, B. Zhu, Y. Teng, and J. R. Qiu, “Intense near-infrared emission from ZnO-LiYbO(2) hybrid phosphors through efficient energy transfer from ZnO to Yb3+.,” Opt. Express 18(2), 639–644 (2010).
[Crossref] [PubMed]

W. E. Mahmoud, “Synthesis and optical properties of Ce-doped ZnO hexagonal nanoplatelets,” J. Cryst. Growth 312(21), 3075–3079 (2010).
[Crossref]

N. Jiang, S. Ye, and J. R. Qiu, “Electron energy-loss spectroscopy study of Yb doped ZnO,” J. Appl. Phys. 108(8), 083535 (2010).
[Crossref]

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[Crossref]

2008 (1)

H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
[Crossref]

2007 (1)

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

2005 (1)

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

2002 (2)

H. Kind, H. Q. Yan, B. Messer, M. Law, and P. D. Yang, “Nanowire ultraviolet photodetectors and optical switches,” Adv. Mater. 14(2), 158–160 (2002).
[Crossref]

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

1997 (1)

Y. Morinaga, K. Sakuragi, N. Fujimura, and T. Ito, “Effect of Ce doping on the growth of ZnO thin films,” J. Cryst. Growth 174(1), 691–695 (1997).
[Crossref]

Abdullin, Kh. A.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

Ablimit, A.

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Ahmed, S. M.

S. M. Ahmed, P. Szymanski, L. M. El-Nadi, and M. A. El-Sayed, “Energy-transfer efficiency in Eu-doped ZnO thin films: the effects of oxidative annealing on the dynamics and the intermediate defect states,” ACS Appl. Mater. Interfaces 6(3), 1765–1772 (2014).
[Crossref] [PubMed]

Ai, T. T.

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

Alivov, Y. I.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

Avrutin, V.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

Baker, C. C.

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

Balestrieri, M.

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
[Crossref]

Baranov, A. N.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

M. V. Shestakov, V. K. Tikhomirov, D. Kirilenko, A. S. Kuznetsov, L. F. Chibotaru, A. N. Baranov, G. Van Tendeloo, and V. V. Moshchalkov, “Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host,” Opt. Express 19(17), 15955–15964 (2011).
[Crossref] [PubMed]

Bedoya-Calle, A.

M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
[Crossref]

Bu, Y. Y.

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

Cheah, K. W.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Chen, J.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Chen, X. M.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Chibotaru, L. F.

Cho, S. J.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

Coello, V.

M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
[Crossref]

Coetsee, E.

V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
[Crossref]

Colis, S.

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
[Crossref]

da Rosa, A. L.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Deng, L. G.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

Ding, C. R.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Dinia, A.

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
[Crossref]

Dogan, S.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

Dong, H.

H. Dong, L.-D. Sun, and C.-H. Yan, “Energy transfer in lanthanide upconversion studies for extended optical applications,” Chem. Soc. Rev. 44(6), 1608–1634 (2015).
[Crossref] [PubMed]

Dong, J. Z.

L. Yang, J. Z. Dong, Z. C. Jiang, A. L. Pan, and X. J. Zhuang, “Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays,” J. Appl. Phys. 115(22), 224308 (2014).
[Crossref]

Du, Y. W.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

El-Nadi, L. M.

S. M. Ahmed, P. Szymanski, L. M. El-Nadi, and M. A. El-Sayed, “Energy-transfer efficiency in Eu-doped ZnO thin films: the effects of oxidative annealing on the dynamics and the intermediate defect states,” ACS Appl. Mater. Interfaces 6(3), 1765–1772 (2014).
[Crossref] [PubMed]

El-Sayed, M. A.

S. M. Ahmed, P. Szymanski, L. M. El-Nadi, and M. A. El-Sayed, “Energy-transfer efficiency in Eu-doped ZnO thin films: the effects of oxidative annealing on the dynamics and the intermediate defect states,” ACS Appl. Mater. Interfaces 6(3), 1765–1772 (2014).
[Crossref] [PubMed]

Fan, H. H.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Fan, H. Q.

G. P. He, H. Q. Fan, and Z. W. Wang, “Enhanced optical properties of heterostructured ZnO/CeO2 nanocomposite fabricated by one-pot hydrothermal method: fluorescence and ultraviolet absorption and visible light transparency,” Opt. Mater. 38, 145–153 (2014).
[Crossref]

Ferblantier, G.

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
[Crossref]

Finstad, T. G.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Frauenheim, T.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Fujimura, N.

Y. Morinaga, K. Sakuragi, N. Fujimura, and T. Ito, “Effect of Ce doping on the growth of ZnO thin films,” J. Cryst. Growth 174(1), 691–695 (1997).
[Crossref]

Fujita, Y.

J. Lin, Y. Fujita, and A. Neogi, “Saturation of two photon emission in ZnO nanoparticles with second order nonlinearity,” RSC Advances 5(15), 10921–10926 (2015).
[Crossref]

Gabdullin, M. T.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

García-Méndez, M.

M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
[Crossref]

Garter, M. J.

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

Ge, C. N.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

Geburt, S.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Gong, L.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Gritsenko, L. V.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

Guerra, E. M.

M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
[Crossref]

Hägglund, C.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

He, F.

He, G. P.

G. P. He, H. Q. Fan, and Z. W. Wang, “Enhanced optical properties of heterostructured ZnO/CeO2 nanocomposite fabricated by one-pot hydrothermal method: fluorescence and ultraviolet absorption and visible light transparency,” Opt. Mater. 38, 145–153 (2014).
[Crossref]

Heikenfeld, J. C.

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

Heimbrodt, W.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Heinemann, M. D.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

Heng, C. L.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Hsu, H. S.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

Huang, J. C. A.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

Ito, T.

Y. Morinaga, K. Sakuragi, N. Fujimura, and T. Ito, “Effect of Ce doping on the growth of ZnO thin films,” J. Cryst. Growth 174(1), 691–695 (1997).
[Crossref]

Jeong, T. S.

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

Jiang, L. Y.

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

Jiang, N.

Jiang, Z. C.

L. Yang, J. Z. Dong, Z. C. Jiang, A. L. Pan, and X. J. Zhuang, “Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays,” J. Appl. Phys. 115(22), 224308 (2014).
[Crossref]

Jones, R.

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

Kaiser, U.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Kalkozova, Zh. K.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

Kharin, A. Y.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

Kim, B. J.

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

Kim, H. S.

H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
[Crossref]

Kind, H.

H. Kind, H. Q. Yan, B. Messer, M. Law, and P. D. Yang, “Nanowire ultraviolet photodetectors and optical switches,” Adv. Mater. 14(2), 158–160 (2002).
[Crossref]

Kirilenko, D.

Kretzschmar, S.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

Kumar, V.

V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
[Crossref]

V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
[Crossref]

V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
[Crossref]

Kumekov, S. E.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

Kuznetsov, A. S.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

M. V. Shestakov, V. K. Tikhomirov, D. Kirilenko, A. S. Kuznetsov, L. F. Chibotaru, A. N. Baranov, G. Van Tendeloo, and V. V. Moshchalkov, “Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host,” Opt. Express 19(17), 15955–15964 (2011).
[Crossref] [PubMed]

Larsen, J. K.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

Law, M.

H. Kind, H. Q. Yan, B. Messer, M. Law, and P. D. Yang, “Nanowire ultraviolet photodetectors and optical switches,” Adv. Mater. 14(2), 158–160 (2002).
[Crossref]

Lee, D. S.

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

Lee, T. S.

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

Li, C.

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

Li, H.

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Li, K. F.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Li, S.-Y.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

Li, X.

Y. Zhang, Y. Liu, X. Li, Q. J. Wang, and E. Xie, “Room temperature enhanced red emission from novel Eu(3+) doped ZnO nanocrystals uniformly dispersed in nanofibers,” Nanotechnology 22(41), 415702 (2011).
[Crossref] [PubMed]

Li, X. L.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Lin, J.

J. Lin, Y. Fujita, and A. Neogi, “Saturation of two photon emission in ZnO nanoparticles with second order nonlinearity,” RSC Advances 5(15), 10921–10926 (2015).
[Crossref]

Liu, C.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

Liu, C.-S.

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

Liu, J. J.

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Liu, Q.

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

Liu, T.

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

Liu, X.

Liu, X. C.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

Liu, Y.

Y. Zhang, Y. Liu, X. Li, Q. J. Wang, and E. Xie, “Room temperature enhanced red emission from novel Eu(3+) doped ZnO nanocrystals uniformly dispersed in nanofibers,” Nanotechnology 22(41), 415702 (2011).
[Crossref] [PubMed]

Liu, Y. F.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Lorke, M.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Lubguban, J. A.

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

Lugo, F.

H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
[Crossref]

Luo, L.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Ma, Y. Y.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[Crossref]

Mahmoud, W. E.

W. E. Mahmoud, “Synthesis and optical properties of Ce-doped ZnO hexagonal nanoplatelets,” J. Cryst. Growth 312(21), 3075–3079 (2010).
[Crossref]

Messer, B.

H. Kind, H. Q. Yan, B. Messer, M. Law, and P. D. Yang, “Nanowire ultraviolet photodetectors and optical switches,” Adv. Mater. 14(2), 158–160 (2002).
[Crossref]

Morinaga, Y.

Y. Morinaga, K. Sakuragi, N. Fujimura, and T. Ito, “Effect of Ce doping on the growth of ZnO thin films,” J. Cryst. Growth 174(1), 691–695 (1997).
[Crossref]

Morkoc, H.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
[Crossref]

Moshchalkov, V. V.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

M. V. Shestakov, V. K. Tikhomirov, D. Kirilenko, A. S. Kuznetsov, L. F. Chibotaru, A. N. Baranov, G. Van Tendeloo, and V. V. Moshchalkov, “Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host,” Opt. Express 19(17), 15955–15964 (2011).
[Crossref] [PubMed]

Mukash, Zh. O.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

Muller, D.

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
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J. Lin, Y. Fujita, and A. Neogi, “Saturation of two photon emission in ZnO nanoparticles with second order nonlinearity,” RSC Advances 5(15), 10921–10926 (2015).
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H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
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Ntwaeaborwa, O. M.

V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
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U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
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Pan, A. L.

L. Yang, J. Z. Dong, Z. C. Jiang, A. L. Pan, and X. J. Zhuang, “Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays,” J. Appl. Phys. 115(22), 224308 (2014).
[Crossref]

Pan, Y. X.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[Crossref]

Pearton, S. J.

H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
[Crossref]

Platzer-Björkman, C.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
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Qiu, Z. R.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
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H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
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Ren, Y.

J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
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U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
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S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
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M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
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Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
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Y. Morinaga, K. Sakuragi, N. Fujimura, and T. Ito, “Effect of Ce doping on the growth of ZnO thin films,” J. Cryst. Growth 174(1), 691–695 (1997).
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M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
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J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
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M. García-Méndez, R. R. Segura, V. Coello, E. M. Guerra, and A. Bedoya-Calle, “The influence of Ce doping on the structural and optoelectronic properties of RF-sputtered ZnO films,” Opt. Quantum Electron. 47(8), 2637–2648 (2015).
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M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

M. V. Shestakov, V. K. Tikhomirov, D. Kirilenko, A. S. Kuznetsov, L. F. Chibotaru, A. N. Baranov, G. Van Tendeloo, and V. V. Moshchalkov, “Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host,” Opt. Express 19(17), 15955–15964 (2011).
[Crossref] [PubMed]

Slaoui, A.

M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
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V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
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A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
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W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
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Su, W. Y.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

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H. Dong, L.-D. Sun, and C.-H. Yan, “Energy transfer in lanthanide upconversion studies for extended optical applications,” Chem. Soc. Rev. 44(6), 1608–1634 (2015).
[Crossref] [PubMed]

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V. Kumar, S. Som, V. Kumar, V. Kumar, O. M. Ntwaeaborwa, E. Coetsee, and H. C. Swart, “Tunable and white emission from ZnO:Tb3+ nanophosphors for solid state lighting applications,” Chem. Eng. J. 255(7), 541–552 (2014).
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S. M. Ahmed, P. Szymanski, L. M. El-Nadi, and M. A. El-Sayed, “Energy-transfer efficiency in Eu-doped ZnO thin films: the effects of oxidative annealing on the dynamics and the intermediate defect states,” ACS Appl. Mater. Interfaces 6(3), 1765–1772 (2014).
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L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Teke, A.

U. Özgür, Y. I. Alivov, C. Liu, A. Teke, M. A. Reshchikov, S. Doğan, V. Avrutin, S. J. Cho, and H. Morkoc, “A comprehensive review of ZnO materials and devices,” J. Appl. Phys. 98(4), 041301 (2005).
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Teng, Y.

Terukov, E. I.

L. V. Gritsenko, Kh. A. Abdullin, M. T. Gabdullin, Zh. K. Kalkozova, S. E. Kumekov, Zh. O. Mukash, A. Yu. Sazonov, and E. I. Terukov, “Effect of thermal annealing on properties of polycrystalline ZnO thin films,” J. Cryst. Growth 457, 164–170 (2017).
[Crossref]

Tikhomirov, V. K.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

M. V. Shestakov, V. K. Tikhomirov, D. Kirilenko, A. S. Kuznetsov, L. F. Chibotaru, A. N. Baranov, G. Van Tendeloo, and V. V. Moshchalkov, “Quantum cutting in Li (770 nm) and Yb (1000 nm) co-dopant emission bands by energy transfer from the ZnO nano-crystalline host,” Opt. Express 19(17), 15955–15964 (2011).
[Crossref] [PubMed]

Timoshenko, V. Y.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
[Crossref]

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M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
[Crossref]

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J. K. Larsen, S.-Y. Li, J. J. S. Scragg, Y. Ren, C. Hägglund, M. D. Heinemann, S. Kretzschmar, T. Unold, and C. Platzer-Björkman, “Interference effects in photoluminescence spectra of Cu2ZnSnS4 and Cu(In,Ga)Se2 thin films,” J. Appl. Phys. 118(3), 035307 (2015).
[Crossref]

Van Tendeloo, G.

Veligzhanin, A. A.

M. V. Shestakov, A. N. Baranov, V. K. Tikhomirov, Y. V. Zubavichus, A. S. Kuznetsov, A. A. Veligzhanin, A. Y. Kharin, R. Rösslhuber, V. Y. Timoshenko, and V. V. Moshchalkov, “Energy-transfer luminescence of a zinc oxide/ytterbium oxide nanocomposite,” RSC Advances 2(23), 8783–8788 (2012).
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Venkataiah, G.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

Voss, T.

S. Geburt, M. Lorke, A. L. da Rosa, T. Frauenheim, R. Röder, T. Voss, U. Kaiser, W. Heimbrodt, and C. Ronning, “Intense intrashell luminescence of Eu-doped single ZnO nanowires at room temperature by implantation created Eu-Oi complexes,” Nano Lett. 14(8), 4523–4528 (2014).
[Crossref] [PubMed]

Wang, H. Z.

L. Luo, L. Gong, Y. F. Liu, J. Chen, C. R. Ding, X. G. Tang, X. L. Li, Z. R. Qiu, H. Z. Wang, X. M. Chen, K. F. Li, H. H. Fan, and K. W. Cheah, “Enhanced ultraviolet lasing from europium-doped zinc oxide nanocrystals,” Opt. Mater. 32(9), 1066–1070 (2010).
[Crossref]

Wang, Q. J.

Y. Zhang, Y. Liu, X. Li, Q. J. Wang, and E. Xie, “Room temperature enhanced red emission from novel Eu(3+) doped ZnO nanocrystals uniformly dispersed in nanofibers,” Nanotechnology 22(41), 415702 (2011).
[Crossref] [PubMed]

Wang, T.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Wang, X. F.

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

Wang, Y. L.

H. S. Kim, F. Lugo, S. J. Pearton, D. P. Norton, Y. L. Wang, and F. Ren, “Phosphorus doped ZnO light emitting diodes fabricated via pulsed laser deposition,” Appl. Phys. Lett. 92(11), 112108 (2008).
[Crossref]

Wang, Y. Q.

A. J. Steckl, J. C. Heikenfeld, D. S. Lee, M. J. Garter, C. C. Baker, Y. Q. Wang, and R. Jones, “Rare-earth-doped GaN: growth, properties, and fabrication of electroluminescence devices,” IEEE J. Sel. Top. Quantum Electron. 8(4), 749–766 (2002).
[Crossref]

Wang, Z. W.

G. P. He, H. Q. Fan, and Z. W. Wang, “Enhanced optical properties of heterostructured ZnO/CeO2 nanocomposite fabricated by one-pot hydrothermal method: fluorescence and ultraviolet absorption and visible light transparency,” Opt. Mater. 38, 145–153 (2014).
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White, H. W.

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

Wu, H. C.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Xiao, F.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[Crossref]

Xie, E.

Y. Zhang, Y. Liu, X. Li, Q. J. Wang, and E. Xie, “Room temperature enhanced red emission from novel Eu(3+) doped ZnO nanocrystals uniformly dispersed in nanofibers,” Nanotechnology 22(41), 415702 (2011).
[Crossref] [PubMed]

Yan, C.-H.

H. Dong, L.-D. Sun, and C.-H. Yan, “Energy transfer in lanthanide upconversion studies for extended optical applications,” Chem. Soc. Rev. 44(6), 1608–1634 (2015).
[Crossref] [PubMed]

Yan, H. Q.

H. Kind, H. Q. Yan, B. Messer, M. Law, and P. D. Yang, “Nanowire ultraviolet photodetectors and optical switches,” Adv. Mater. 14(2), 158–160 (2002).
[Crossref]

Yan, X. H.

X. F. Wang, Q. Liu, Y. Y. Bu, C.-S. Liu, T. Liu, and X. H. Yan, “Optical temperature sensing of rare-earth ion doped phosphors,” RSC Advances 5(105), 86219–86236 (2015).
[Crossref]

Yang, L.

L. Yang, J. Z. Dong, Z. C. Jiang, A. L. Pan, and X. J. Zhuang, “Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays,” J. Appl. Phys. 115(22), 224308 (2014).
[Crossref]

Yang, M. C.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

Yang, P. D.

H. Kind, H. Q. Yan, B. Messer, M. Law, and P. D. Yang, “Nanowire ultraviolet photodetectors and optical switches,” Adv. Mater. 14(2), 158–160 (2002).
[Crossref]

Ye, S.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[Crossref]

S. Ye, N. Jiang, F. He, X. Liu, B. Zhu, Y. Teng, and J. R. Qiu, “Intense near-infrared emission from ZnO-LiYbO(2) hybrid phosphors through efficient energy transfer from ZnO to Yb3+.,” Opt. Express 18(2), 639–644 (2010).
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N. Jiang, S. Ye, and J. R. Qiu, “Electron energy-loss spectroscopy study of Yb doped ZnO,” J. Appl. Phys. 108(8), 083535 (2010).
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Yin, P. G.

C. L. Heng, T. Wang, W. Y. Su, H. C. Wu, M. C. Yang, L. G. Deng, P. G. Yin, and T. G. Finstad, “Intense ultraviolet photoluminescent emission from Yb doped ZnO thin films on Si after high temperature annealing,” J. Alloys Compd. 695, 2232–2237 (2017).
[Crossref]

C. L. Heng, T. Wang, H. Li, J. J. Liu, A. Ablimit, W. Y. Su, H. C. Wu, P. G. Yin, and T. G. Finstad, “Strong enhancement of ultra-violet emission by Ce doping of ZnO sputtered films,” Mater. Lett. 162, 53–55 (2016).
[Crossref]

Youn, C. J.

Y. R. Ryu, J. A. Lubguban, T. S. Lee, H. W. White, T. S. Jeong, C. J. Youn, and B. J. Kim, “Excitonic ultraviolet lasing in ZnO-based light emitting devices,” Appl. Phys. Lett. 90(13), 131115 (2007).
[Crossref]

Yu, Q.

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

Yuan, X. Q.

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

Zhang, F. M.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
[Crossref]

Zhang, Q. Y.

S. Ye, F. Xiao, Y. X. Pan, Y. Y. Ma, and Q. Y. Zhang, “Phosphors in phosphor-converted white light-emitting diodes: recent advances in materials, techniques and properties,” Mater. Sci. Eng. Rep. 71(1), 1–34 (2010).
[Crossref]

Zhang, Y.

Y. Zhang, Y. Liu, X. Li, Q. J. Wang, and E. Xie, “Room temperature enhanced red emission from novel Eu(3+) doped ZnO nanocrystals uniformly dispersed in nanofibers,” Nanotechnology 22(41), 415702 (2011).
[Crossref] [PubMed]

Zhang, Y. T.

Q. Yu, T. T. Ai, L. Y. Jiang, Y. T. Zhang, C. Li, and X. Q. Yuan, “Efficient energy transfer in Eu-doped ZnO on diamond film,” RSC Advances 4(96), 53946–53949 (2014).
[Crossref]

Zhu, B.

Zhuang, X. J.

L. Yang, J. Z. Dong, Z. C. Jiang, A. L. Pan, and X. J. Zhuang, “Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays,” J. Appl. Phys. 115(22), 224308 (2014).
[Crossref]

Zou, W. Q.

W. Q. Zou, C. N. Ge, G. Venkataiah, H. L. Su, H. S. Hsu, J. C. A. Huang, X. C. Liu, F. M. Zhang, and Y. W. Du, “Ferromagnetism in Tb doped ZnO nanocrystalline films,” J. Appl. Phys. 111(11), 113704 (2012).
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Zubavichus, Y. V.

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M. Balestrieri, G. Ferblantier, S. Colis, G. Schmerber, C. Ulhaq-Bouillet, D. Muller, A. Slaoui, and A. Dinia, “Structural and optical properties of Yb-doped ZnO films deposited by magnetron reactive sputtering for photon conversion,” Sol. Energy Mater. Sol. Cells 117(4), 363–371 (2013).
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Figures (5)

Fig. 1
Fig. 1 (a) PL spectra of the S2 film after annealing in N2 for 30 minutes at the indicated temperatures; (b) PL spectra of S0, S2, S4 and S5 after the identical 1100 °C annealing; (c) PL excitation spectra for the S2 film after 800, 1000 and 1100 °C annealing, respectively, and for the S4 film after the 1100 °C annealing. The monitoring wavelength is at their Yb3+ PL emission peak positions.
Fig. 2
Fig. 2 The integral intensity of (a) the NBE emissions (INBE, integrated in the range of 350-450 nm) and (b) the visible bands (IVIS, integrated in the range of 450-700 nm) for the S0-5 films as a function of the anneal temperature; (c) the integral intensity ratio of INBE/IVIS of the films at the indicated temperatures.
Fig. 3
Fig. 3 The XRD patterns of (a) S2 film after annealing at the indicated temperatures; (b) S0, S1-3 films after the same 1100 °C annealing. The inset in (b) is the FWHM of (002) diffraction peaks for the S0, S1, S4 and S5 films.
Fig. 4
Fig. 4 Surface morphologies of the samples: (a), (c), (e) and (g) are as-deposited S0, S1, S2, and S3 films, respectively; (b), (d), (f), and (h) are 1100°C annealing S0, S1, S2, and S3 films, respectively.
Fig. 5
Fig. 5 The peak intensities of the UV PL for (a) S0, S4 and S5 films, and (b) S1, S2 and S3 films as a function of the He-Cd laser excitation power. The sample films were annealed at the identical 1100 °C. The inset in Fig. 5a shows the PL spectrum of S0, S4 and S5 under their excitation powers, while the inset in Fig. 5(b) shows the PL spectra of S2 with increasing the excitation power to 40 μW.

Tables (1)

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Table 1 The stoichiometry of the sample films

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