Abstract

A series of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (−0.4 ≤ x ≤ 0.6) phosphors were prepared by solid-state reaction method, and the photoluminescence properties were investigated in detail. By varying the relative contents of Ca2+ and Sr2+, the single-phase solid solution samples were obtained, which can be found from the corresponding XRD patterns. The excitation spectra of the as-prepared samples reveal that broad excitation bands appear and different excitation spectral shapes are observed by monitoring at 433 and 585 nm, which could be due to the various Eu2+ emission centers. Every emission spectrum includes two emission bands, and their relative intensities depend on the excitation wavelength and the Ca2+/Sr2+ concentration ratio. As a result, the tunable-emission has been realized. The spectra characteristics for different Ca2+/Sr2+ concentration ratio in Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ further verify that two Eu2+ emission centers exist and the emission bands at 433 and 585 nm are attributed to the Eu2+ ions in Sr2+ and Ca2+ sites, respectively. The temperature-dependent photoluminescence spectra reveal that the Eu2+ emission centers in the Sr2+ and Ca2+ sites have different thermal stabilities, which results in the emission color changes somewhat for different temperature.

© 2015 Optical Society of America

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    [Crossref]
  3. H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
    [Crossref] [PubMed]
  4. M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
    [Crossref]
  5. Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
    [Crossref]
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    [Crossref]
  7. M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
    [Crossref] [PubMed]
  8. F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
    [Crossref]
  9. A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
    [Crossref]
  10. S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
    [Crossref] [PubMed]
  11. W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
    [Crossref]
  12. X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
    [Crossref]
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    [Crossref]
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    [Crossref]
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    [Crossref]
  16. A. Akella and D. A. Keszler, “The new orthosilicate Li4SrCa(SiO4)2: structure and Eu2+ luminescence,” Inorg. Chem. 34(6), 1308–1310 (1995).
    [Crossref]
  17. X. M. Zhang, W. L. Li, and H. J. Seo, “Luminescence and energy transfer in Eu2+, Mn2+ co-doped Li4SrCa(SiO4)2 for white light-emitting-diodes,” Phys. Lett. A 373(38), 3486–3489 (2009).
    [Crossref]
  18. X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
    [Crossref]
  19. X. Zhang and H. J. Seo, “Color tunable and thermally stable luminescence of Tb3+ doped Li4SrCa(SiO4)2 phosphors,” Mater. Res. Bull. 47(8), 2012–2015 (2012).
    [Crossref]
  20. J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
    [Crossref]
  21. H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
    [Crossref]
  22. Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
    [Crossref] [PubMed]
  23. W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
    [Crossref] [PubMed]
  24. J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
    [Crossref]
  25. X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
    [Crossref]

2015 (3)

M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
[Crossref]

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

M. Xu, L. Wang, D. Jia, and F. Le, “Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor,” J. Lumin. 158, 125–129 (2015).
[Crossref]

2014 (3)

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

2013 (5)

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
[Crossref]

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

2012 (2)

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

X. Zhang and H. J. Seo, “Color tunable and thermally stable luminescence of Tb3+ doped Li4SrCa(SiO4)2 phosphors,” Mater. Res. Bull. 47(8), 2012–2015 (2012).
[Crossref]

2011 (3)

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

2010 (3)

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

2009 (3)

X. M. Zhang, W. L. Li, and H. J. Seo, “Luminescence and energy transfer in Eu2+, Mn2+ co-doped Li4SrCa(SiO4)2 for white light-emitting-diodes,” Phys. Lett. A 373(38), 3486–3489 (2009).
[Crossref]

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

2008 (1)

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

2005 (1)

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
[Crossref]

1995 (1)

A. Akella and D. A. Keszler, “The new orthosilicate Li4SrCa(SiO4)2: structure and Eu2+ luminescence,” Inorg. Chem. 34(6), 1308–1310 (1995).
[Crossref]

Akella, A.

A. Akella and D. A. Keszler, “The new orthosilicate Li4SrCa(SiO4)2: structure and Eu2+ luminescence,” Inorg. Chem. 34(6), 1308–1310 (1995).
[Crossref]

auf der Günne, J. S.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Baumann, V.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Bedyal, A. K.

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

Bhaskar, R. S.

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

Brinkley, S.

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

Chen, L.

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Chen, Y.

X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
[Crossref]

Chiu, Y.-C.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Choi, J. C.

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
[Crossref]

DenBaars, S. P.

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

Deng, D.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Ding, Y.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Fang, Y.

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Fellows, N. N.

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

Gong, M.

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
[Crossref]

Guo, N.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Han, J. Y.

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Hao, Z.

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

He, P.

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

He, Y.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Hecht, C.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Hou, J.

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Hu, J.

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

Hu, Y.

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Huang, C.-H.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Huang, Y.

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

Im, W. B.

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

Jang, H. S.

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Jeon, D. Y.

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Jia, D.

M. Xu, L. Wang, D. Jia, and F. Le, “Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor,” J. Lumin. 158, 125–129 (2015).
[Crossref]

Jia, Y.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Jiao, M.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Jing, X.

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

Jose, M. T.

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

Keszler, D. A.

A. Akella and D. A. Keszler, “The new orthosilicate Li4SrCa(SiO4)2: structure and Eu2+ luminescence,” Inorg. Chem. 34(6), 1308–1310 (1995).
[Crossref]

Kim, J. S.

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
[Crossref]

Kim, S. M.

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
[Crossref]

Kim, S. W.

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Kim, Y. I.

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

Kumar, R. S.

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

Kumar, V.

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

Kumar, V. S.

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

Lakshmanan, A.

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

Le, F.

M. Xu, L. Wang, D. Jia, and F. Le, “Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor,” J. Lumin. 158, 125–129 (2015).
[Crossref]

Lee, S. G.

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Li, W. L.

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

X. M. Zhang, W. L. Li, and H. J. Seo, “Luminescence and energy transfer in Eu2+, Mn2+ co-doped Li4SrCa(SiO4)2 for white light-emitting-diodes,” Phys. Lett. A 373(38), 3486–3489 (2009).
[Crossref]

Li, Y.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Li, Z.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Lian, S.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Liao, L.

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

Liu, B.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Liu, F.

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Liu, R.

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Liu, R.-S.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Liu, W.-R.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Liu, Y.

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

Lu, H.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Lü, W.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Luo, Y.

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

Lv, W.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Ma, X.

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Ma, Z.

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Mikhailovsky, A.

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

Nakai, Y.

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

Nie, Q.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Ntwaeaborwa, O. M.

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

Park, H. L.

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
[Crossref]

Park, Y. H.

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
[Crossref]

Pitale, S. S.

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

Qiao, X. B.

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

Schmidt, P. J.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Schnick, W.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Seo, H. J.

X. Zhang and H. J. Seo, “Color tunable and thermally stable luminescence of Tb3+ doped Li4SrCa(SiO4)2 phosphors,” Mater. Res. Bull. 47(8), 2012–2015 (2012).
[Crossref]

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

X. M. Zhang, W. L. Li, and H. J. Seo, “Luminescence and energy transfer in Eu2+, Mn2+ co-doped Li4SrCa(SiO4)2 for white light-emitting-diodes,” Phys. Lett. A 373(38), 3486–3489 (2009).
[Crossref]

Seshadri, R.

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

Shao, B.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Shi, J.

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

Shi, L.

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

Shi, Y. R.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Stadler, F.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Swart, H. C.

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

Thomas, P. C.

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

Tsai, J.-C.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Tsuboi, T.

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

Wang, C.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Wang, L.

M. Xu, L. Wang, D. Jia, and F. Le, “Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor,” J. Lumin. 158, 125–129 (2015).
[Crossref]

Wang, X.

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

Wang, Y.

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

Wang, Y. H.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Xia, Z.

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

Xie, F.

M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
[Crossref]

Xie, M.

M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
[Crossref]

Xu, M.

M. Xu, L. Wang, D. Jia, and F. Le, “Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor,” J. Lumin. 158, 125–129 (2015).
[Crossref]

Xu, S.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Yang, H.

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Yang, Z. G.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Yeh, C.-W.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Yeh, Y.-T.

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

Yin, H.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

You, H.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Yu, C.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Yu, H.

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

Yu, L.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Zeng, L.

M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
[Crossref]

Zhang, J.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

Zhang, N.

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Zhang, S.

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

Zhang, W.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Zhang, X.

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
[Crossref]

X. Zhang and H. J. Seo, “Color tunable and thermally stable luminescence of Tb3+ doped Li4SrCa(SiO4)2 phosphors,” Mater. Res. Bull. 47(8), 2012–2015 (2012).
[Crossref]

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

Zhang, X. M.

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

X. M. Zhang, W. L. Li, and H. J. Seo, “Luminescence and energy transfer in Eu2+, Mn2+ co-doped Li4SrCa(SiO4)2 for white light-emitting-diodes,” Phys. Lett. A 373(38), 3486–3489 (2009).
[Crossref]

Zhao, G.

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Zhao, Q.

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

Zhao, Z. Y.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Zhou, L.

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
[Crossref]

Zhou, W.

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

Zhou, X.

M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
[Crossref]

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Zhu, G.

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Zhuang, W.

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

Adv. Mater. (1)

H. S. Jang, H. Yang, S. W. Kim, J. Y. Han, S. G. Lee, and D. Y. Jeon, “White light-emitting diodes with excellent color rendering based on organically capped cdse quantum dots and Sr3 SiO5 :Ce3+, Li+ phosphors,” Adv. Mater. 20(14), 2696–2702 (2008).
[Crossref] [PubMed]

Appl. Phys. B (1)

X. M. Zhang, W. L. Li, L. Shi, X. B. Qiao, and H. J. Seo, “Photoluminescence properties of blue-emitting Li4SrCa(SiO4)2:Eu2+ phosphor for solid-state lighting,” Appl. Phys. B 99(1-2), 279–284 (2010).
[Crossref]

Ceram. Int. (2)

J. Zhang, W. Zhang, Y. He, W. Zhou, L. Yu, S. Lian, Z. Li, and M. Gong, “Site-occupancy on the luminescence properties of a single-phase Li4SrCa(SiO4)2:Eu2+ phosphor,” Ceram. Int. 40(7), 9831–9834 (2014).
[Crossref]

F. Liu, Y. Fang, N. Zhang, J. Hou, Z. Ma, and G. Zhao, “Blue light excited Li6CaLa2M2O12:Eu3+ (M = Ta, Sb) red-emitting phosphors: structure and photoluminescence properties,” Ceram. Int. 40(9), 14781–14786 (2014).
[Crossref]

Chem. Mater. (3)

W. B. Im, N. N. Fellows, S. P. DenBaars, R. Seshadri, and Y. I. Kim, “LaSr2AlO5, a versatile host compound for Ce3+-based yellow phosphors: structural tuning of optical properties and use in solid-state white lighting,” Chem. Mater. 21(13), 2957–2966 (2009).
[Crossref]

W. B. Im, S. Brinkley, J. Hu, A. Mikhailovsky, S. P. DenBaars, and R. Seshadri, “Sr2.975−xBaxCe0.025AlO4F: a highly efficient green-emitting oxyfluoride phosphor for solid state white lighting,” Chem. Mater. 22(9), 2842–2849 (2010).
[Crossref]

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Günne, V. Baumann, and W. Schnick, “SrAlSi4N7:Eu2+ − A nitridoalumosilicate phosphor for warm white light (pc) LEDs with edge-sharing tetrahedra,” Chem. Mater. 21(8), 1595–1601 (2009).
[Crossref]

Inorg. Chem. (5)

A. Akella and D. A. Keszler, “The new orthosilicate Li4SrCa(SiO4)2: structure and Eu2+ luminescence,” Inorg. Chem. 34(6), 1308–1310 (1995).
[Crossref]

M. Jiao, N. Guo, W. Lü, Y. Jia, W. Lv, Q. Zhao, B. Shao, and H. You, “Tunable blue-green-emitting Ba3LaNa(PO4)3F:Eu2+,Tb3+ phosphor with energy transfer for near-UV white LEDs,” Inorg. Chem. 52(18), 10340–10346 (2013).
[Crossref] [PubMed]

S. Zhang, Y. Nakai, T. Tsuboi, Y. Huang, and H. J. Seo, “The thermal stabilities of luminescence and microstructures of Eu2+-doped KBaPO4 and NaSrPO4 with β-K2SO4 type structure,” Inorg. Chem. 50(7), 2897–2904 (2011).
[Crossref] [PubMed]

Z. Xia, X. Wang, Y. Wang, L. Liao, and X. Jing, “Synthesis, Structure, and Thermally Stable Luminescence of Eu2+-Doped Ba2Ln(BO3)2Cl (Ln = Y, Gd and Lu) Host Compounds,” Inorg. Chem. 50(20), 10134–10142 (2011).
[Crossref] [PubMed]

W.-R. Liu, C.-H. Huang, C.-W. Yeh, J.-C. Tsai, Y.-C. Chiu, Y.-T. Yeh, and R.-S. Liu, “A Study on the Luminescence and Energy Transfer of Single-Phase and Color-Tunable KCaY(PO4)2:Eu2+,Mn2+ Phosphor for Application in White-Light LEDs,” Inorg. Chem. 51(18), 9636–9641 (2012).
[Crossref] [PubMed]

J. Alloys Compd. (2)

V. Kumar, A. K. Bedyal, S. S. Pitale, O. M. Ntwaeaborwa, and H. C. Swart, “Synthesis, spectral and surface investigation of NaSrBO3: Sm3+phosphor for full color down conversion in LEDs,” J. Alloys Compd. 554, 214–220 (2013).
[Crossref]

L. Chen, R. Liu, W. Zhuang, Y. Liu, Y. Hu, X. Zhou, and X. Ma, “A study on photoluminescence and energy transfer of SrAlSi4N7:Eu2+, Ce3+ phosphors for application in white-light LED,” J. Alloys Compd. 627, 218–221 (2015).
[Crossref]

J. Lumin. (2)

M. Xu, L. Wang, D. Jia, and F. Le, “Luminescence properties and energy transfer investigations of Zn2P2O7: Ce3+, Tb3+ phosphor,” J. Lumin. 158, 125–129 (2015).
[Crossref]

H. Yu, D. Deng, Y. Li, S. Xu, Y. Li, C. Yu, Y. Ding, H. Lu, H. Yin, and Q. Nie, “Electronic structure and photoluminescence properties of yellow-emitting Ca10Na(PO4)7: Eu2+ phosphor for white light-emitting diodes,” J. Lumin. 143, 132–136 (2013).
[Crossref]

J. Mater. Chem. (1)

Y. Liu, X. Zhang, Z. Hao, Y. Luo, X. Wang, and J. Zhang, “Generating yellow and red emissions by co-doping Mn2+ to substitute for Ca2+ and Sc3+ sites in Ca3Sc2Si3O12:Ce3+ green emitting phosphor for white LED applications,” J. Mater. Chem. 21(41), 16379–16384 (2011).
[Crossref]

J. Mater. Chem. C Mater. Opt. Electron. Devices (1)

Z. Y. Zhao, Z. G. Yang, Y. R. Shi, C. Wang, B. Liu, G. Zhu, and Y. H. Wang, “Red-emitting oxonitridosilicate phosphors Sr2SiNzO4−1.5z:Eu2+ for white light-emitting diodes: structure and luminescence properties,” J. Mater. Chem. C Mater. Opt. Electron. Devices 1(7), 1407–1412 (2013).
[Crossref]

Mater. Lett. (2)

A. Lakshmanan, R. S. Bhaskar, P. C. Thomas, R. S. Kumar, V. S. Kumar, and M. T. Jose, “A red phosphor for nUV LED based on (Y,Gd)BO3:Eu3+,” Mater. Lett. 64(16), 1809–1812 (2010).
[Crossref]

X. Zhang, Y. Chen, L. Zhou, and M. Gong, “NUV chip based white LED using thermal stable Eu2+-activated phosphate and borate phosphor,” Mater. Lett. 93, 390–392 (2013).
[Crossref]

Mater. Res. Bull. (2)

X. Zhang and H. J. Seo, “Color tunable and thermally stable luminescence of Tb3+ doped Li4SrCa(SiO4)2 phosphors,” Mater. Res. Bull. 47(8), 2012–2015 (2012).
[Crossref]

X. Zhang, P. He, L. Zhou, J. Shi, and M. Gong, “Energy transfer and luminescent properties of a green-to-red color tunable Tb3+, Eu3+ co-doped K2Y(WO4)(PO4) phosphor,” Mater. Res. Bull. 60, 300–307 (2014).
[Crossref]

Phys. Lett. A (1)

X. M. Zhang, W. L. Li, and H. J. Seo, “Luminescence and energy transfer in Eu2+, Mn2+ co-doped Li4SrCa(SiO4)2 for white light-emitting-diodes,” Phys. Lett. A 373(38), 3486–3489 (2009).
[Crossref]

Solid State Commun. (1)

J. S. Kim, Y. H. Park, S. M. Kim, J. C. Choi, and H. L. Park, “Temperature-dependent emission spectra of M2SiO4:Eu2+ (M = Ca, Sr, Ba) phosphors for green and greenish white LEDs,” Solid State Commun. 133(7), 445–448 (2005).
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Solid State Sci. (1)

M. Xie, L. Zeng, X. Zhou, and F. Xie, “Synthesis and photoluminescence properties of novel red emitting phosphor Sr2LiSiO4F:Eu3+,” Solid State Sci. 39, 6–9 (2015).
[Crossref]

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Figures (11)

Fig. 1
Fig. 1 (a) XRD patterns of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (−0.4 ≤ x ≤ 0.6); (b) enlarged XRD patterns for their predominated diffraction peaks.
Fig. 2
Fig. 2 SEM image of Li4CaSr(SiO4)2.
Fig. 3
Fig. 3 (a) Diffuse reflection spectrum of Li4CaSr(SiO4)2, the inset shows its absorption spectrum; (b) DRS of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (x = 0, 0.3, and −0.2).
Fig. 4
Fig. 4 Excitation spectra of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (x = 0.3 and −0.2).
Fig. 5
Fig. 5 Emission spectra of Li4Ca0.8Sr1.16(SiO4)2:0.04Eu2+ under various excitation wavelengths, the inset shows the intensity ratio of the blue emission to the orange emission as a function of the excitation wavelength
Fig. 6
Fig. 6 CIE chromaticity diagram for Li4Ca0.8Sr1.16(SiO4)2:0.04Eu2+ (Points 1-7 are for excitation wavelengths of 250, 263, 300, 355, 365, 390, and 415 nm, respectively) and Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (Points 8-15 are for x = −0.3, −0.1, 0, 0.1, 0.3, 0.4, 0.5, and 0.6, respectively) under 355 nm excitation, the insets (a-f) show the digital photographs of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (−0.3 ≤ x ≤ 0.6) under 365 nm ultraviolet lamp irradiation.
Fig. 7
Fig. 7 Emission spectra of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (0 ≤ x ≤ 0.6), the inset shows their normalized emission spectra at 433 nm.
Fig. 8
Fig. 8 Emission spectra of Li4Ca1-xSr0.96 + x(SiO4)2:0.04Eu2+ (−0.4 ≤ x ≤ 0), the inset shows their normalized emission spectra at 433 nm.
Fig. 9
Fig. 9 Emission spectra of Li4Ca0.8Sr1.16(SiO4)2:0.04Eu2+ at different temperatures, the inset shows the temperature dependence of the predominated emission intensities.
Fig. 10
Fig. 10 Emission spectra of Li4Ca1.2Sr0.76(SiO4)2:0.04Eu2+ at different temperatures, the inset shows the temperature dependence of the predominated emission intensities.
Fig. 11
Fig. 11 CIE chromaticity diagram for Li4Ca0.8Sr1.16(SiO4)2:0.04Eu2+ (Points 1-6 are for T = 20, 50, 80, 110, 140, and 170 °C, respectively) and Li4Ca1.2Sr0.76(SiO4)2:0.04Eu2+ (Points 7-12 are for T = 20, 50, 80, 110, 140, and 170 °C, respectively)

Equations (1)

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F ( R ) = ( 1 R ) 2 / 2 R = K / S

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