Abstract

Abstract: Eu3+-doped NaLa4Mo3O15F was prepared by solid-state method and characterized by X-ray powder diffraction (XRD) and scanning electron microscope (SEM). The luminescence properties such as the excitation and emission spectra, the internal quantum efficiency (QE) and the thermal stability were investigated. The optimal level of Eu3+-doping was determined by the luminescence intensities and QEs. The phosphor exhibits a bright red luminescence at 615 nm corresponding to the electric dipole transition 5D0→7F2, which is more efficient than the commercial phosphor of Y2O2S:Eu3+. With the increase of Eu3+-doping the charge transfer band (CTB) shows an obvious red-shift, which presents a longer wavelength than any other reported Eu3+-doped molydates with non-cubic structures. NaLa4Mo3O15F:Eu3+ has excellent properties such as the high quantum efficiency excited in near-UV and blue wavelength, the high thermal stability, etc. This is benefited from its structural characteristics: the cubic crystalline phase with MoO6 groups and the incorporation of F- ions in the host lattices.

© 2014 Optical Society of America

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  1. M. H. Crawford, “LEDS for solid-state lighting: Performance challenges and recent advances,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1028–1040 (2009).
    [Crossref]
  2. N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
    [Crossref]
  3. D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Semipolar (2021) InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting,” J. Display Technology 9, 190–198 (2013).
    [Crossref]
  4. H. Zhao, G. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, and N. Tansu, “Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells,” Opt. Express 19(S4Suppl 4), A991–A1007 (2011).
    [Crossref] [PubMed]
  5. J. Zhang and N. Tansu, “Optical gain and laser characteristics of InGaN quantum wells on ternary ingan substrates,” IEEE Photonics Journal 5(2), 2600111 (2013).
    [Crossref]
  6. P. Zhu, G. Liu, J. Zhang, and N. Tansu, “FDTD Analysis on Extraction Efficiency of Gan Light-Emitting Diodes with Microsphere Arrays,” J. Display Technology 9(5), 317–323 (2013).
    [Crossref]
  7. X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
    [Crossref]
  8. J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
    [Crossref]
  9. E. Sullivan and T. Vogt, “Oxy-Fluoride Phosphors for Solid State Lighting,” ECS J. Solid State Sci. Technol. 2(2), R3088–R3099 (2013).
    [Crossref]
  10. P. S. Dutta and A. Khanna, “Eu3+ activated molybdate and tungstate based red phosphors with charge transfer band in blue region,” ECS J. Solid State Sci. Technol. 2(2), R3153–R3167 (2013).
    [Crossref]
  11. J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
    [Crossref]
  12. J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
    [Crossref]
  13. H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
    [Crossref] [PubMed]
  14. J. P. Faurie, “Préparation de nouvelles phases MLn4Mo3O16, MLn6Mo4O22 de structure dérivée du type fluorine,” Bull. Soc. Chim. Fr. 14, 3865–3868 (1971).
  15. A. R. Denton and N. W. Ashcroft, “Vegard’s law,” Phys. Rev. A 43(6), 3161–3164 (1991).
    [Crossref] [PubMed]
  16. A. A. Setlur, H. A. Comanzo, A. M. Srivastava, and W. W. Beers, “Spectroscopic Evaluation of a White Light Phosphor for UV-LEDs-Ca2NaMg2V3O12:Eu3+,” J. Electrochem. Soc. 152(12), H205–H208 (2005).
    [Crossref]
  17. L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
    [Crossref]
  18. L. Qin, Y. Huang, T. Tsuboi, and H. J. Seo, “The red-emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R = La3+, Gd3+, Y3+) for light emitting diodes,” Mater. Res. Bull. 47(12), 4498–4502 (2012).
    [Crossref]
  19. Y. L. Huang, Y. Nakai, T. Tsuboi, and H. J. Seo, “The new red-emitting phosphor of oxyfluoride Ca2RF4PO4:Eu3+ (R=Gd, Y) for solid state lighting applications,” Opt. Express 19(7), 6303–6311 (2011).
    [Crossref] [PubMed]
  20. P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
    [Crossref]
  21. E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
    [Crossref] [PubMed]
  22. Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
    [Crossref]
  23. G. Blasse, “On the Eu3+ fluorescence of mixed metal oxides. IV. The photoluminescent efficiency of Eu3+-activated oxides,” J. Chem. Phys. 45(7), 2356–2360 (1966).
    [Crossref]
  24. Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
    [Crossref]
  25. Y. C. Chang, C. H. Liang, S. A. Yan, and Y. S. Chang, “Synthesis and photoluminescence characteristics of high color purity and brightness Li3Ba2Gd3(MoO4)8:Eu3+ red phosphors,” J. Phys. Chem. C 114(8), 3645–3652 (2010).
    [Crossref]
  26. C. Qin, Y. Huang, and H. J. Seo, “The thermal stability and structural site-distribution of Eu3+ ions in the red-emitting phosphors Ca9Eu2W4O24 and Sr9Eu2W4O24,” J. Alloy. Comp. 534, 86–92 (2012).
    [Crossref]

2013 (9)

D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Semipolar (2021) InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting,” J. Display Technology 9, 190–198 (2013).
[Crossref]

J. Zhang and N. Tansu, “Optical gain and laser characteristics of InGaN quantum wells on ternary ingan substrates,” IEEE Photonics Journal 5(2), 2600111 (2013).
[Crossref]

P. Zhu, G. Liu, J. Zhang, and N. Tansu, “FDTD Analysis on Extraction Efficiency of Gan Light-Emitting Diodes with Microsphere Arrays,” J. Display Technology 9(5), 317–323 (2013).
[Crossref]

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

E. Sullivan and T. Vogt, “Oxy-Fluoride Phosphors for Solid State Lighting,” ECS J. Solid State Sci. Technol. 2(2), R3088–R3099 (2013).
[Crossref]

P. S. Dutta and A. Khanna, “Eu3+ activated molybdate and tungstate based red phosphors with charge transfer band in blue region,” ECS J. Solid State Sci. Technol. 2(2), R3153–R3167 (2013).
[Crossref]

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

2012 (3)

L. Qin, Y. Huang, T. Tsuboi, and H. J. Seo, “The red-emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R = La3+, Gd3+, Y3+) for light emitting diodes,” Mater. Res. Bull. 47(12), 4498–4502 (2012).
[Crossref]

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

C. Qin, Y. Huang, and H. J. Seo, “The thermal stability and structural site-distribution of Eu3+ ions in the red-emitting phosphors Ca9Eu2W4O24 and Sr9Eu2W4O24,” J. Alloy. Comp. 534, 86–92 (2012).
[Crossref]

2011 (5)

Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
[Crossref]

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

H. Zhao, G. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, and N. Tansu, “Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells,” Opt. Express 19(S4Suppl 4), A991–A1007 (2011).
[Crossref] [PubMed]

Y. L. Huang, Y. Nakai, T. Tsuboi, and H. J. Seo, “The new red-emitting phosphor of oxyfluoride Ca2RF4PO4:Eu3+ (R=Gd, Y) for solid state lighting applications,” Opt. Express 19(7), 6303–6311 (2011).
[Crossref] [PubMed]

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

2010 (4)

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
[Crossref] [PubMed]

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Y. C. Chang, C. H. Liang, S. A. Yan, and Y. S. Chang, “Synthesis and photoluminescence characteristics of high color purity and brightness Li3Ba2Gd3(MoO4)8:Eu3+ red phosphors,” J. Phys. Chem. C 114(8), 3645–3652 (2010).
[Crossref]

2009 (1)

M. H. Crawford, “LEDS for solid-state lighting: Performance challenges and recent advances,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1028–1040 (2009).
[Crossref]

2005 (1)

A. A. Setlur, H. A. Comanzo, A. M. Srivastava, and W. W. Beers, “Spectroscopic Evaluation of a White Light Phosphor for UV-LEDs-Ca2NaMg2V3O12:Eu3+,” J. Electrochem. Soc. 152(12), H205–H208 (2005).
[Crossref]

1991 (1)

A. R. Denton and N. W. Ashcroft, “Vegard’s law,” Phys. Rev. A 43(6), 3161–3164 (1991).
[Crossref] [PubMed]

1971 (1)

J. P. Faurie, “Préparation de nouvelles phases MLn4Mo3O16, MLn6Mo4O22 de structure dérivée du type fluorine,” Bull. Soc. Chim. Fr. 14, 3865–3868 (1971).

1966 (1)

G. Blasse, “On the Eu3+ fluorescence of mixed metal oxides. IV. The photoluminescent efficiency of Eu3+-activated oxides,” J. Chem. Phys. 45(7), 2356–2360 (1966).
[Crossref]

Anc, M.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

Ashcroft, N. W.

A. R. Denton and N. W. Ashcroft, “Vegard’s law,” Phys. Rev. A 43(6), 3161–3164 (1991).
[Crossref] [PubMed]

Beers, W. W.

A. A. Setlur, H. A. Comanzo, A. M. Srivastava, and W. W. Beers, “Spectroscopic Evaluation of a White Light Phosphor for UV-LEDs-Ca2NaMg2V3O12:Eu3+,” J. Electrochem. Soc. 152(12), H205–H208 (2005).
[Crossref]

Bettinelli, M.

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
[Crossref] [PubMed]

Blasse, G.

G. Blasse, “On the Eu3+ fluorescence of mixed metal oxides. IV. The photoluminescent efficiency of Eu3+-activated oxides,” J. Chem. Phys. 45(7), 2356–2360 (1966).
[Crossref]

Boutinaud, P.

E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
[Crossref] [PubMed]

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

Cavalli, E.

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
[Crossref] [PubMed]

Chang, Y. C.

Y. C. Chang, C. H. Liang, S. A. Yan, and Y. S. Chang, “Synthesis and photoluminescence characteristics of high color purity and brightness Li3Ba2Gd3(MoO4)8:Eu3+ red phosphors,” J. Phys. Chem. C 114(8), 3645–3652 (2010).
[Crossref]

Chang, Y. S.

Y. C. Chang, C. H. Liang, S. A. Yan, and Y. S. Chang, “Synthesis and photoluminescence characteristics of high color purity and brightness Li3Ba2Gd3(MoO4)8:Eu3+ red phosphors,” J. Phys. Chem. C 114(8), 3645–3652 (2010).
[Crossref]

Choi, B. C.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Choi, J. I.

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

Chu, S. Y.

Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
[Crossref]

Chuang, Y. M.

Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
[Crossref]

Comanzo, H. A.

A. A. Setlur, H. A. Comanzo, A. M. Srivastava, and W. W. Beers, “Spectroscopic Evaluation of a White Light Phosphor for UV-LEDs-Ca2NaMg2V3O12:Eu3+,” J. Electrochem. Soc. 152(12), H205–H208 (2005).
[Crossref]

Crawford, M. H.

M. H. Crawford, “LEDS for solid-state lighting: Performance challenges and recent advances,” IEEE J. Sel. Top. Quantum Electron. 15(4), 1028–1040 (2009).
[Crossref]

DenBaars, S. P.

D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Semipolar (2021) InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting,” J. Display Technology 9, 190–198 (2013).
[Crossref]

Denton, A. R.

A. R. Denton and N. W. Ashcroft, “Vegard’s law,” Phys. Rev. A 43(6), 3161–3164 (1991).
[Crossref] [PubMed]

Dierolf, V.

Dorenbos, P.

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
[Crossref] [PubMed]

Dutta, P. S.

P. S. Dutta and A. Khanna, “Eu3+ activated molybdate and tungstate based red phosphors with charge transfer band in blue region,” ECS J. Solid State Sci. Technol. 2(2), R3153–R3167 (2013).
[Crossref]

Ee, Y. K.

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Fang, Y. C.

Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
[Crossref]

Faurie, J. P.

J. P. Faurie, “Préparation de nouvelles phases MLn4Mo3O16, MLn6Mo4O22 de structure dérivée du type fluorine,” Bull. Soc. Chim. Fr. 14, 3865–3868 (1971).

Feezell, D. F.

D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Semipolar (2021) InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting,” J. Display Technology 9, 190–198 (2013).
[Crossref]

Feng, W. L.

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

Galvez, M.

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

Gilchrist, J. F.

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

Han, J. K.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

Hannah, M.

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

Hannah, M. E.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

Hu, Y. L.

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Huang, S. C.

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Huang, Y.

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

L. Qin, Y. Huang, T. Tsuboi, and H. J. Seo, “The red-emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R = La3+, Gd3+, Y3+) for light emitting diodes,” Mater. Res. Bull. 47(12), 4498–4502 (2012).
[Crossref]

C. Qin, Y. Huang, and H. J. Seo, “The thermal stability and structural site-distribution of Eu3+ ions in the red-emitting phosphors Ca9Eu2W4O24 and Sr9Eu2W4O24,” J. Alloy. Comp. 534, 86–92 (2012).
[Crossref]

Huang, Y. L.

Jang, K.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Jeong, J. H.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Jewell, J.

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Kao, P. C.

Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
[Crossref]

Khanna, A.

P. S. Dutta and A. Khanna, “Eu3+ activated molybdate and tungstate based red phosphors with charge transfer band in blue region,” ECS J. Solid State Sci. Technol. 2(2), R3153–R3167 (2013).
[Crossref]

Kim, S. I.

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

Kolk, E.

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

Krumpel, A. H.

P. Dorenbos, A. H. Krumpel, E. Kolk, P. Boutinaud, M. Bettinelli, and E. Cavalli, “Lanthanide level location in transition metal complex compounds,” Opt. Mater. 32(12), 1681–1685 (2010).
[Crossref]

Kumnorkaew, P.

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

Lee, H. S.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Li, H.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Li, W. L.

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

Li, X. H.

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Li, X. M.

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

Liang, C. H.

Y. C. Chang, C. H. Liang, S. A. Yan, and Y. S. Chang, “Synthesis and photoluminescence characteristics of high color purity and brightness Li3Ba2Gd3(MoO4)8:Eu3+ red phosphors,” J. Phys. Chem. C 114(8), 3645–3652 (2010).
[Crossref]

Liu, G.

P. Zhu, G. Liu, J. Zhang, and N. Tansu, “FDTD Analysis on Extraction Efficiency of Gan Light-Emitting Diodes with Microsphere Arrays,” J. Display Technology 9(5), 317–323 (2013).
[Crossref]

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

H. Zhao, G. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, and N. Tansu, “Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells,” Opt. Express 19(S4Suppl 4), A991–A1007 (2011).
[Crossref] [PubMed]

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Lugauer, H.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

Mahiou, R.

E. Cavalli, P. Boutinaud, R. Mahiou, M. Bettinelli, and P. Dorenbos, “Luminescence dynamics in Tb3+-doped CaWO4 and CaMoO4 crystals,” Inorg. Chem. 49(11), 4916–4921 (2010).
[Crossref] [PubMed]

McKittrick, J.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

Mishra, K. C.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

Moon, B. K.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Nakai, Y.

Nakamura, S.

D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Semipolar (2021) InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting,” J. Display Technology 9, 190–198 (2013).
[Crossref]

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Piquette, A.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

Poplawsky, J. D.

Qin, C.

C. Qin, Y. Huang, and H. J. Seo, “The thermal stability and structural site-distribution of Eu3+ ions in the red-emitting phosphors Ca9Eu2W4O24 and Sr9Eu2W4O24,” J. Alloy. Comp. 534, 86–92 (2012).
[Crossref]

Qin, L.

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

L. Qin, Y. Huang, T. Tsuboi, and H. J. Seo, “The red-emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R = La3+, Gd3+, Y3+) for light emitting diodes,” Mater. Res. Bull. 47(12), 4498–4502 (2012).
[Crossref]

Seo, H. J.

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

L. Qin, Y. Huang, T. Tsuboi, and H. J. Seo, “The red-emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R = La3+, Gd3+, Y3+) for light emitting diodes,” Mater. Res. Bull. 47(12), 4498–4502 (2012).
[Crossref]

C. Qin, Y. Huang, and H. J. Seo, “The thermal stability and structural site-distribution of Eu3+ ions in the red-emitting phosphors Ca9Eu2W4O24 and Sr9Eu2W4O24,” J. Alloy. Comp. 534, 86–92 (2012).
[Crossref]

Y. L. Huang, Y. Nakai, T. Tsuboi, and H. J. Seo, “The new red-emitting phosphor of oxyfluoride Ca2RF4PO4:Eu3+ (R=Gd, Y) for solid state lighting applications,” Opt. Express 19(7), 6303–6311 (2011).
[Crossref] [PubMed]

Setlur, A. A.

A. A. Setlur, H. A. Comanzo, A. M. Srivastava, and W. W. Beers, “Spectroscopic Evaluation of a White Light Phosphor for UV-LEDs-Ca2NaMg2V3O12:Eu3+,” J. Electrochem. Soc. 152(12), H205–H208 (2005).
[Crossref]

Simeonov, D.

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Song, R.

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

Speck, J.

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Speck, J. S.

D. F. Feezell, J. S. Speck, S. P. DenBaars, and S. Nakamura, “Semipolar (2021) InGaN/GaN light-emitting diodes for high-efficiency solid-state lighting,” J. Display Technology 9, 190–198 (2013).
[Crossref]

Srivastava, A. M.

A. A. Setlur, H. A. Comanzo, A. M. Srivastava, and W. W. Beers, “Spectroscopic Evaluation of a White Light Phosphor for UV-LEDs-Ca2NaMg2V3O12:Eu3+,” J. Electrochem. Soc. 152(12), H205–H208 (2005).
[Crossref]

Sullivan, E.

E. Sullivan and T. Vogt, “Oxy-Fluoride Phosphors for Solid State Lighting,” ECS J. Solid State Sci. Technol. 2(2), R3088–R3099 (2013).
[Crossref]

Talbot, J. B.

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
[Crossref]

Tansu, N.

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

J. Zhang and N. Tansu, “Optical gain and laser characteristics of InGaN quantum wells on ternary ingan substrates,” IEEE Photonics Journal 5(2), 2600111 (2013).
[Crossref]

P. Zhu, G. Liu, J. Zhang, and N. Tansu, “FDTD Analysis on Extraction Efficiency of Gan Light-Emitting Diodes with Microsphere Arrays,” J. Display Technology 9(5), 317–323 (2013).
[Crossref]

H. Zhao, G. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, and N. Tansu, “Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells,” Opt. Express 19(S4Suppl 4), A991–A1007 (2011).
[Crossref] [PubMed]

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Tao, C. Y.

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

Tong, H.

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Tsuboi, T.

L. Qin, Y. Huang, T. Tsuboi, and H. J. Seo, “The red-emitting phosphors of Eu3+-activated MR2(MoO4)4 (M=Ba, Sr, Ca; R = La3+, Gd3+, Y3+) for light emitting diodes,” Mater. Res. Bull. 47(12), 4498–4502 (2012).
[Crossref]

Y. L. Huang, Y. Nakai, T. Tsuboi, and H. J. Seo, “The new red-emitting phosphor of oxyfluoride Ca2RF4PO4:Eu3+ (R=Gd, Y) for solid state lighting applications,” Opt. Express 19(7), 6303–6311 (2011).
[Crossref] [PubMed]

Vogt, T.

E. Sullivan and T. Vogt, “Oxy-Fluoride Phosphors for Solid State Lighting,” ECS J. Solid State Sci. Technol. 2(2), R3088–R3099 (2013).
[Crossref]

Wei, D.

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

Weisbuch, C.

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Yan, S. A.

Y. C. Chang, C. H. Liang, S. A. Yan, and Y. S. Chang, “Synthesis and photoluminescence characteristics of high color purity and brightness Li3Ba2Gd3(MoO4)8:Eu3+ red phosphors,” J. Phys. Chem. C 114(8), 3645–3652 (2010).
[Crossref]

Yang, H. K.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Yang, W. J.

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

Yang, Y. L.

Y. L. Yang, X. M. Li, W. L. Feng, W. J. Yang, W. L. Li, and C. Y. Tao, “Effect of surfactants on morphology and luminescent properties of CaMoO4: Eu3+ red phosphors,” J. Alloy. Comp. 509(3), 845–848 (2011).
[Crossref]

Yi, S. S.

H. Li, H. K. Yang, B. K. Moon, B. C. Choi, J. H. Jeong, K. Jang, H. S. Lee, and S. S. Yi, “Crystal structure, electronic structure, and optical and photoluminescence properties of Eu(III) ion-doped Lu6Mo(W)O12.,” Inorg. Chem. 50(24), 12522–12530 (2011).
[Crossref] [PubMed]

Yu, Y. M.

L. Qin, D. Wei, Y. Huang, S. I. Kim, Y. M. Yu, and H. J. Seo, “Efficient and thermally stable red luminescence from nano-sized phosphor of Gd6MoO12:Eu3+,” J. Nanopart. Res. 15(9), 1940–1948 (2013).
[Crossref]

Zeng, Z. L.

Y. C. Fang, S. Y. Chu, P. C. Kao, Y. M. Chuang, and Z. L. Zeng, “Energy transfer and thermal quenching behaviors of CaLa2(MoO4)4:Sm3+, Eu3+ red phosphors,” J. Electrochem. Soc. 158(2), J1–J5 (2011).
[Crossref]

Zhang, J.

J. Zhang and N. Tansu, “Optical gain and laser characteristics of InGaN quantum wells on ternary ingan substrates,” IEEE Photonics Journal 5(2), 2600111 (2013).
[Crossref]

P. Zhu, G. Liu, J. Zhang, and N. Tansu, “FDTD Analysis on Extraction Efficiency of Gan Light-Emitting Diodes with Microsphere Arrays,” J. Display Technology 9(5), 317–323 (2013).
[Crossref]

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

H. Zhao, G. Liu, J. Zhang, J. D. Poplawsky, V. Dierolf, and N. Tansu, “Approaches for high internal quantum efficiency green InGaN light-emitting diodes with large overlap quantum wells,” Opt. Express 19(S4Suppl 4), A991–A1007 (2011).
[Crossref] [PubMed]

N. Tansu, H. Zhao, G. Liu, X. H. Li, J. Zhang, H. Tong, and Y. K. Ee, “III-nitride photonics,” IEEE Photonics Journal 2(2), 241–248 (2010).
[Crossref]

Zhao, H.

Zhu, P.

P. Zhu, G. Liu, J. Zhang, and N. Tansu, “FDTD Analysis on Extraction Efficiency of Gan Light-Emitting Diodes with Microsphere Arrays,” J. Display Technology 9(5), 317–323 (2013).
[Crossref]

X. H. Li, P. Zhu, G. Liu, J. Zhang, R. Song, Y. K. Ee, P. Kumnorkaew, J. F. Gilchrist, and N. Tansu, “Light extraction efficiency enhancement of III-nitride light-emitting diodes by using 2-D close-packed TiO2 microsphere arrays,” J. Display Technology 9(5), 324–332 (2013).
[Crossref]

Appl. Phys. Lett. (1)

J. Jewell, D. Simeonov, S. C. Huang, Y. L. Hu, S. Nakamura, J. Speck, and C. Weisbuch, “Double embedded photonic crystals for extraction of guided light in light-emitting diodes,” Appl. Phys. Lett. 100(17), 171105 (2012).
[Crossref]

Bull. Soc. Chim. Fr. (1)

J. P. Faurie, “Préparation de nouvelles phases MLn4Mo3O16, MLn6Mo4O22 de structure dérivée du type fluorine,” Bull. Soc. Chim. Fr. 14, 3865–3868 (1971).

ECS J. Solid State Sci. Technol. (4)

E. Sullivan and T. Vogt, “Oxy-Fluoride Phosphors for Solid State Lighting,” ECS J. Solid State Sci. Technol. 2(2), R3088–R3099 (2013).
[Crossref]

P. S. Dutta and A. Khanna, “Eu3+ activated molybdate and tungstate based red phosphors with charge transfer band in blue region,” ECS J. Solid State Sci. Technol. 2(2), R3153–R3167 (2013).
[Crossref]

J. McKittrick, M. E. Hannah, A. Piquette, J. K. Han, J. I. Choi, M. Anc, M. Galvez, H. Lugauer, J. B. Talbot, and K. C. Mishra, “Phosphor selection considerations for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3119–R3131 (2013).
[Crossref]

J. K. Han, J. I. Choi, A. Piquette, M. Hannah, M. Anc, M. Galvez, J. B. Talbot, and J. McKittrick, “Phosphor development and integration for near-UV LED solid state lighting,” ECS J. Solid State Sci. Technol. 2(2), R3138–R3147 (2013).
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Figures (6)

Fig. 1
Fig. 1 The sketch map of NaLa4[Mo3O15]F structure along [001] direction. M1 = 0.94O + 0.06F; M2 = 0.94O + 0.06F;M3 = (0.8La + 0.2Na) (12e) + Mo (12d); M4 = 0.8La + 0.2Na.

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Fig. 2
Fig. 2 (a) the selected XRD patterns of NaLa4-4xEu4x[Mo3O15]F (x = 0.1, 0.3, 0.5, 0.6, 0.7, 0.8, 1.0). (b) The dependence of lattice parameter a and the unit cell volume V on Eu3+ doping. Inset is the normalized enlargements of XRD peak (222).

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Fig. 3
Fig. 3 The typical SEM micrograph of NaLa4-4xEu4x[Mo3O15]F (x = 0.7).

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Fig. 4
Fig. 4 the luminescence spectra of NaLa4-4xEu4x[Mo3O15]F (x = 0.7, λex = 395nm) (a), NaLa4-4xEu4x[Mo3O15]F (x = 0.7, λex = 465nm) (b), and NaLa4-4xEu4x[Mo3O15]F (x = 0.1, λex = 395 nm) (c) compared with Y2O2S:0.05Eu3+ (λex = 395nm) at 300 K. IPL denotes the integrated area of the spectrum. Inset is emission intensity as a function of Eu3+ doping in NaLa4-4xEu4x[Mo3O15]F.

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Fig. 5
Fig. 5 (a): The excitation spectra of NaLa4-4xEu4x[Mo3O15]F (x = 0.1, 0.7) (λem = 615nm) and Y2O2S:0.05Eu3+ (λem = 627nm). Ect is obtained by extrapolating the tangent line of excitation band edges to zero. (b): The dependence of excitation band edge energy Ect on doping levels.

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Fig. 6
Fig. 6 the temperature dependence of the integrated intensity in NaLa4-4xEu4x[Mo3O15]F (x = 0.7) normalized with respect to the value at 20 °C, inset shows the activation energy of the thermal quenching fitted in Eq. (1).

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Tables (1)

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Table 1 the PL QEs and CIE color coordinates of novel red-emitting NaLa4-4xEu4x[Mo3O15]F (x = 0.1-1.0).

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Equations (1)

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I T = I 0 ⋅ [ 1 + c exp ( − Δ E k T ) ] − 1

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