Abstract

White light-emitting diodes using YAG: Ce3+ phosphors suffer from the deficiency of red component, leading to a low color rendering index (CRI) and a high correlated color temperature (CCT). Herein, a yellow-red single-phase YAG: Ce3+, Cr3+ phosphor was synthesized by a traditional solid-state reaction. Compared with Cr3+ ion single-doped YAG phosphor, the emission intensity in the far-red region of the co-doped YAG: Ce3+, Cr3+ sample increases because of the energy transfer from Ce3+ ions to Cr3+ ions. For sample Y3Al5O12: 0.02Ce3+, 0.008Cr3+ phosphor, the internal and external quantum efficiencies are 58.9% and 46.7%, respectively. And, the fabricated white LED shows a CCT of 6085 K at CIE 1931 coordinate (0.3208, 0.3273). Moreover, the CRI is as high as 77.9 while that of the corresponding Ce3+ single-doped YAG phosphor is only 63.2. Thus, the Ce3+ and Cr3+ co-doped YAG phosphors are suitable for white light-emitting diodes (WLEDs).

© 2017 Optical Society of America

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  1. C. C. Lin and R. S. Liu, “Advances in Phosphors for Light-emitting Diodes,” J. Phys. Chem. Lett. 2(11), 1268–1277 (2011).
    [Crossref] [PubMed]
  2. H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
    [Crossref] [PubMed]
  3. Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
    [Crossref] [PubMed]
  4. J. R. Oh, S. H. Cho, Y. H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
    [Crossref] [PubMed]
  5. C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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]
  6. M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
    [Crossref]
  7. E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
    [Crossref]
  8. Z. J. Wang, S. Q. Lou, and P. L. Li, “Enhanced orange–red emission of Sr3La(PO4)3:Ce3+, Mn2+ via energy transfer,” J. Lumin. 156, 87–90 (2014).
    [Crossref]
  9. W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
    [Crossref]
  10. L. M. Shao and X. P. Jing, “Energy transfer and luminescent properties of Ce3+, Cr3+ co-doped Y3Al5O12,” J. Lumin. 131(6), 1216–1221 (2011).
    [Crossref]
  11. J. Ueda, K. Kuroishi, and S. Tanabe, “Bright persistent ceramic phosphors of Ce3+-Cr3+-codoped garnet able to store by blue light,” Appl. Phys. Lett. 104(10), 101904 (2014).
    [Crossref]
  12. L. Wang, X. Zhang, Z. Hao, Y. Luo, X. J. Wang, and J. Zhang, “Enriching red emission of Y3Al5O12: Ce3+ by codoping Pr3+ and Cr3+ for improving color rendering of white LEDs,” Opt. Express 18(24), 25177–25182 (2010).
    [Crossref] [PubMed]
  13. P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
    [Crossref]
  14. C. H. Huang and T. M. Chen, “A Novel Single-Composition Trichromatic White-Light Ca3Y(GaO)3(BO3)4:Ce3+,Mn2+,Tb3+ Phosphor for UV-Light Emitting Diodes,” J. Phys. Chem. C 115(5), 2349–2355 (2011).
    [Crossref]
  15. D. L. Dexter, “A Theory of Sensitized Luminescence in Solids,” J. Chem. Phys. 21(5), 836–850 (1953).
    [Crossref]
  16. X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
    [Crossref] [PubMed]
  17. N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
    [Crossref] [PubMed]
  18. G. Blasse, “Enengy Transfer in Oxidic Phosphors,” Phys. Lett. 28(6), 444–445 (1968).
    [Crossref]
  19. S. Bhushan and M. V. Chukichev, “Temperature dependent studies of cathodoluminescence of green band of ZnO crystals,” J. Mater. Sci. Lett. 7(4), 319–321 (1988).
    [Crossref]
  20. Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
    [Crossref]

2015 (1)

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

2014 (3)

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Z. J. Wang, S. Q. Lou, and P. L. Li, “Enhanced orange–red emission of Sr3La(PO4)3:Ce3+, Mn2+ via energy transfer,” J. Lumin. 156, 87–90 (2014).
[Crossref]

J. Ueda, K. Kuroishi, and S. Tanabe, “Bright persistent ceramic phosphors of Ce3+-Cr3+-codoped garnet able to store by blue light,” Appl. Phys. Lett. 104(10), 101904 (2014).
[Crossref]

2013 (1)

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

2012 (1)

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

2011 (4)

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

C. H. Huang and T. M. Chen, “A Novel Single-Composition Trichromatic White-Light Ca3Y(GaO)3(BO3)4:Ce3+,Mn2+,Tb3+ Phosphor for UV-Light Emitting Diodes,” J. Phys. Chem. C 115(5), 2349–2355 (2011).
[Crossref]

C. C. Lin and R. S. Liu, “Advances in Phosphors for Light-emitting Diodes,” J. Phys. Chem. Lett. 2(11), 1268–1277 (2011).
[Crossref] [PubMed]

L. M. Shao and X. P. Jing, “Energy transfer and luminescent properties of Ce3+, Cr3+ co-doped Y3Al5O12,” J. Lumin. 131(6), 1216–1221 (2011).
[Crossref]

2010 (2)

L. Wang, X. Zhang, Z. Hao, Y. Luo, X. J. Wang, and J. Zhang, “Enriching red emission of Y3Al5O12: Ce3+ by codoping Pr3+ and Cr3+ for improving color rendering of white LEDs,” Opt. Express 18(24), 25177–25182 (2010).
[Crossref] [PubMed]

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

2009 (2)

J. R. Oh, S. H. Cho, Y. H. Lee, and Y. R. Do, “Enhanced forward efficiency of Y3Al5O12:Ce3+ phosphor from white light-emitting diodes using blue-pass yellow-reflection filter,” Opt. Express 17(9), 7450–7457 (2009).
[Crossref] [PubMed]

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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]

2008 (2)

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
[Crossref]

2003 (1)

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

1988 (1)

S. Bhushan and M. V. Chukichev, “Temperature dependent studies of cathodoluminescence of green band of ZnO crystals,” J. Mater. Sci. Lett. 7(4), 319–321 (1988).
[Crossref]

1968 (1)

G. Blasse, “Enengy Transfer in Oxidic Phosphors,” Phys. Lett. 28(6), 444–445 (1968).
[Crossref]

1953 (1)

D. L. Dexter, “A Theory of Sensitized Luminescence in Solids,” J. Chem. Phys. 21(5), 836–850 (1953).
[Crossref]

Aoyagi, S.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

auf der Gunne, J. S.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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 Gunne, 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]

Bettentrup, H.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Bhushan, S.

S. Bhushan and M. V. Chukichev, “Temperature dependent studies of cathodoluminescence of green band of ZnO crystals,” J. Mater. Sci. Lett. 7(4), 319–321 (1988).
[Crossref]

Blasse, G.

G. Blasse, “Enengy Transfer in Oxidic Phosphors,” Phys. Lett. 28(6), 444–445 (1968).
[Crossref]

Breshike, C. J.

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

Cao, Y. G.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Chen, T. M.

C. H. Huang and T. M. Chen, “A Novel Single-Composition Trichromatic White-Light Ca3Y(GaO)3(BO3)4:Ce3+,Mn2+,Tb3+ Phosphor for UV-Light Emitting Diodes,” J. Phys. Chem. C 115(5), 2349–2355 (2011).
[Crossref]

Chen, X. Y.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Cho, S. H.

Chukichev, M. V.

S. Bhushan and M. V. Chukichev, “Temperature dependent studies of cathodoluminescence of green band of ZnO crystals,” J. Mater. Sci. Lett. 7(4), 319–321 (1988).
[Crossref]

Dai, Q.

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

Daicho, H.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Dexter, D. L.

D. L. Dexter, “A Theory of Sensitized Luminescence in Solids,” J. Chem. Phys. 21(5), 836–850 (1953).
[Crossref]

Do, Y. R.

Enomoto, K.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Foley, M. E.

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

Guo, N.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

Hao, Z.

Hecht, C.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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]

Hosono, H.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Hsu, S.-T.

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Huang, C. H.

C. H. Huang and T. M. Chen, “A Novel Single-Composition Trichromatic White-Light Ca3Y(GaO)3(BO3)4:Ce3+,Mn2+,Tb3+ Phosphor for UV-Light Emitting Diodes,” J. Phys. Chem. C 115(5), 2349–2355 (2011).
[Crossref]

Huang, P.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Huang, Y.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

Iwasaki, T.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Jing, X. P.

L. M. Shao and X. P. Jing, “Energy transfer and luminescent properties of Ce3+, Cr3+ co-doped Y3Al5O12,” J. Lumin. 131(6), 1216–1221 (2011).
[Crossref]

Jose, G.

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

Katelnikovas, A.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Kuroishi, K.

J. Ueda, K. Kuroishi, and S. Tanabe, “Bright persistent ceramic phosphors of Ce3+-Cr3+-codoped garnet able to store by blue light,” Appl. Phys. Lett. 104(10), 101904 (2014).
[Crossref]

Lan, L.

Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
[Crossref]

Lee, Y. H.

Li, J.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Li, J. G.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Li, P. L.

Z. J. Wang, S. Q. Lou, and P. L. Li, “Enhanced orange–red emission of Sr3La(PO4)3:Ce3+, Mn2+ via energy transfer,” J. Lumin. 156, 87–90 (2014).
[Crossref]

Li, R. F.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Li, X.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Lin, C. C.

C. C. Lin and R. S. Liu, “Advances in Phosphors for Light-emitting Diodes,” J. Phys. Chem. Lett. 2(11), 1268–1277 (2011).
[Crossref] [PubMed]

Lita, A.

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

Liu, K.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

Liu, R. S.

C. C. Lin and R. S. Liu, “Advances in Phosphors for Light-emitting Diodes,” J. Phys. Chem. Lett. 2(11), 1268–1277 (2011).
[Crossref] [PubMed]

Liu, Z. G.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Lou, S. Q.

Z. J. Wang, S. Q. Lou, and P. L. Li, “Enhanced orange–red emission of Sr3La(PO4)3:Ce3+, Mn2+ via energy transfer,” J. Lumin. 156, 87–90 (2014).
[Crossref]

Luo, W. Q.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Luo, Y.

Maeno, Y.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Matsuishi, S.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Nishibori, E.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Oh, J. R.

Opuchovic, O.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Paulose, P. I.

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

Qun, X.

Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
[Crossref]

Raudonyte, E.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Sakata, M.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Sakirzanovas, S.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Sakka, Y.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Sasaki, Y.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Sawa, H.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Schmidt, P. J.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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 Gunne, 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]

Shao, L. M.

L. M. Shao and X. P. Jing, “Energy transfer and luminescent properties of Ce3+, Cr3+ co-doped Y3Al5O12,” J. Lumin. 131(6), 1216–1221 (2011).
[Crossref]

Shinomiya, Y.

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Song, Y.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

Stadler, F.

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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]

Strouse, G. F.

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

Sullivan, B. P.

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Sun, X.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Tanabe, S.

J. Ueda, K. Kuroishi, and S. Tanabe, “Bright persistent ceramic phosphors of Ce3+-Cr3+-codoped garnet able to store by blue light,” Appl. Phys. Lett. 104(10), 101904 (2014).
[Crossref]

Tang, J.-K.

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Tautkus, S.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Thomas, V.

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

Tu, D. T.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Ueda, J.

J. Ueda, K. Kuroishi, and S. Tanabe, “Bright persistent ceramic phosphors of Ce3+-Cr3+-codoped garnet able to store by blue light,” Appl. Phys. Lett. 104(10), 101904 (2014).
[Crossref]

Uhlich, D.

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Unnikrishnan, N. V.

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

Wang, J.

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Wang, L.

Wang, W.-D.

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Wang, X. J.

Wang, Z. J.

Z. J. Wang, S. Q. Lou, and P. L. Li, “Enhanced orange–red emission of Sr3La(PO4)3:Ce3+, Mn2+ via energy transfer,” J. Lumin. 156, 87–90 (2014).
[Crossref]

Warrier, M. K. R.

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

Wu, X.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Xin, M.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Yang, M.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

You, H.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

Zhang, J.

Zhang, X.

L. Wang, X. Zhang, Z. Hao, Y. Luo, X. J. Wang, and J. Zhang, “Enriching red emission of Y3Al5O12: Ce3+ by codoping Pr3+ and Cr3+ for improving color rendering of white LEDs,” Opt. Express 18(24), 25177–25182 (2010).
[Crossref] [PubMed]

Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
[Crossref]

Zhang, Y.

Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
[Crossref]

Zheng, Y.

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

Zhu, H. M.

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

Zhu, Q.

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

Appl. Phys. Lett. (1)

J. Ueda, K. Kuroishi, and S. Tanabe, “Bright persistent ceramic phosphors of Ce3+-Cr3+-codoped garnet able to store by blue light,” Appl. Phys. Lett. 104(10), 101904 (2014).
[Crossref]

Chem. Mater. (1)

C. Hecht, F. Stadler, P. J. Schmidt, J. S. auf der Gunne, 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]

Chem. Phys. Lett. (1)

W.-D. Wang, J.-K. Tang, S.-T. Hsu, J. Wang, and B. P. Sullivan, “Energy transfer and enriched emission spectrum in Cr and Ce co-doped Y3Al5O12 yellow phosphors,” Chem. Phys. Lett. 457(1-3), 103–105 (2008).
[Crossref]

Inorg. Chem. (1)

N. Guo, Y. Huang, H. You, M. Yang, Y. Song, K. Liu, and Y. Zheng, “Ca9Lu(PO4)7:Eu2+,Mn2+: a potential single-phased white-light-emitting phosphor suitable for white-light-emitting diodes,” Inorg. Chem. 49(23), 10907–10913 (2010).
[Crossref] [PubMed]

J. Am. Chem. Soc. (1)

Q. Dai, M. E. Foley, C. J. Breshike, A. Lita, and G. F. Strouse, “Ligand-passivated Eu:Y2O3 nanocrystals as a phosphor for white light emitting diodes,” J. Am. Chem. Soc. 133(39), 15475–15486 (2011).
[Crossref] [PubMed]

J. Chem. Phys. (1)

D. L. Dexter, “A Theory of Sensitized Luminescence in Solids,” J. Chem. Phys. 21(5), 836–850 (1953).
[Crossref]

J. Lumin. (2)

Z. J. Wang, S. Q. Lou, and P. L. Li, “Enhanced orange–red emission of Sr3La(PO4)3:Ce3+, Mn2+ via energy transfer,” J. Lumin. 156, 87–90 (2014).
[Crossref]

L. M. Shao and X. P. Jing, “Energy transfer and luminescent properties of Ce3+, Cr3+ co-doped Y3Al5O12,” J. Lumin. 131(6), 1216–1221 (2011).
[Crossref]

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

M. Xin, D. T. Tu, H. M. Zhu, W. Q. Luo, Z. G. Liu, P. Huang, R. F. Li, Y. G. Cao, and X. Y. Chen, “Single-composition white-emitting NaSrBO3: Ce3+,Sm3+,Tb3+ phosphors for NUV light-emitting diodes,” J. Mater. Chem. C Mater. Opt. Electron. Devices 3(28), 7286–7293 (2015).
[Crossref]

J. Mater. Sci. Lett. (1)

S. Bhushan and M. V. Chukichev, “Temperature dependent studies of cathodoluminescence of green band of ZnO crystals,” J. Mater. Sci. Lett. 7(4), 319–321 (1988).
[Crossref]

J. Phys. Chem. C (1)

C. H. Huang and T. M. Chen, “A Novel Single-Composition Trichromatic White-Light Ca3Y(GaO)3(BO3)4:Ce3+,Mn2+,Tb3+ Phosphor for UV-Light Emitting Diodes,” J. Phys. Chem. C 115(5), 2349–2355 (2011).
[Crossref]

J. Phys. Chem. Lett. (1)

C. C. Lin and R. S. Liu, “Advances in Phosphors for Light-emitting Diodes,” J. Phys. Chem. Lett. 2(11), 1268–1277 (2011).
[Crossref] [PubMed]

J. Phys. Chem. Solids (1)

P. I. Paulose, G. Jose, V. Thomas, N. V. Unnikrishnan, and M. K. R. Warrier, “Sensitized fluorescence of Ce3+/Mn2+ system in phosphate glass,” J. Phys. Chem. Solids 64(5), 841–846 (2003).
[Crossref]

J. Rare Earths (1)

Y. Zhang, L. Lan, X. Zhang, and X. Qun, “Temperature effects on photoluminescence of YAG: Ce3+ phosphor and performance in white light-emitting diodes,” J. Rare Earths 26(3), 446–449 (2008).
[Crossref]

Nat. Commun. (1)

H. Daicho, T. Iwasaki, K. Enomoto, Y. Sasaki, Y. Maeno, Y. Shinomiya, S. Aoyagi, E. Nishibori, M. Sakata, H. Sawa, S. Matsuishi, and H. Hosono, “A novel phosphor for glareless white light-emitting diodes,” Nat. Commun. 3, 1132 (2012).
[Crossref] [PubMed]

Opt. Express (2)

Opt. Mater. (1)

E. Raudonyte, H. Bettentrup, D. Uhlich, S. Sakirzanovas, O. Opuchovic, S. Tautkus, and A. Katelnikovas, “On the Ce3+→Cr3+ energy transfer in Lu3Al5O12 garnets,” Opt. Mater. 37, 204–210 (2014).
[Crossref]

Phys. Lett. (1)

G. Blasse, “Enengy Transfer in Oxidic Phosphors,” Phys. Lett. 28(6), 444–445 (1968).
[Crossref]

Sci. Technol. Adv. Mater. (1)

X. Wu, J. G. Li, J. Li, Q. Zhu, X. Li, X. Sun, and Y. Sakka, “Layered rare-earth hydroxide and oxide nanoplates of the Y/Tb/Eu system: phase-controlled processing, structure characterization and color-tunable photoluminescence via selective excitation and efficient energy transfer,” Sci. Technol. Adv. Mater. 14(1), 015006 (2013).
[Crossref] [PubMed]

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Figures (10)

Fig. 1
Fig. 1 (a) XRD patterns of (Y1-xCex)3(Al1-yCry)5O12 (x: 0,0.02; y: 0-0.015) phosphors. The bottom lines show the standard XRD pattern of cubic Y3Al5O12 (JCPDS 33-0040). (b) The crystal structure of Y3Al5O12 (Ia-3d (230)).
Fig. 2
Fig. 2 Representative SEM images of raw materials (a) Al2O3, (b) Y2O3 and (c) the mixture of them, and (d) the calcined Y3Al5O12: 0.02Ce3+, 0.008Cr3+ phosphors.
Fig. 3
Fig. 3 PL and PLE spectra of (a) Y3Al5O12: 0.02Ce3+, (b) Y3Al5O12: 0.02Cr3+, (c) Y3Al5O12: 0.02Ce3+, 0.008Cr3+ and detailed PL spectra of Y3Al5O12: 0.02Ce3+, 0.008Cr3+ under the excitation at 340 nm.
Fig. 4
Fig. 4 PL spectra of a series of Cr-doped Y3Al5O12: 0.02Ce3+ upon excitation at 450 nm.
Fig. 5
Fig. 5 (a) PL decay curves of Y3Al5O12: 0.02Ce3+, yCr3+ (y: 0-0.015) phosphor at 530 nm under excitation at 450 nm. (b) Dependence of the PL lifetime of Ce3+ at 530 nm and efficiencies of energy transfer from Ce3+ to Cr3+ on molar concentration of Cr3+.
Fig. 6
Fig. 6 Dependence of ln( I 0 /I) of Ce3+ on (a) C (Ce+Cr) × 10 2 , and dependence of I 0 /I of Ce3+ on (b) C (Ce+Cr) 6/3 × 10 4 , (c) C (Ce+Cr) 8/3 × 10 5 , and (d) C (Ce+Cr) 10/3 × 10 6 upon excitation at 340 nm. The red line denotes the corresponding linear fitting to the scattering data points.
Fig. 7
Fig. 7 Dependence of ln( I 0 /I) of Ce3+ on (a) C (Ce+Cr) × 10 2 , and dependence of I 0 /I of Ce3+ on (b) C (Ce+Cr) 6/3 × 10 4 , (c) C (Ce+Cr) 8/3 × 10 5 , and (d) C (Ce+Cr) 10/3 × 10 6 upon excitation at 450 nm. The red line denotes the corresponding linear fitting to the scattering data points.
Fig. 8
Fig. 8 Schematic energy level diagrams of Ce3+, Cr3+ illustrating the energy transfer process.
Fig. 9
Fig. 9 (a) Temperature-dependent integrated PL intensity of Y3Al5O12: 0.02Ce3+, 0.008Cr3+ phosphor; and (b) the In[(I0/IT)-1] versus 1/kT plot and the calculated activation energy ( E a ) for the phosphor.
Fig. 10
Fig. 10 (a) Representation of the CIE chromaticity diagram for YAG: 0.02Ce3+, yCr3+ (y = 0, 0.001, 0.003, 0.005, 0.008, 0.010, 0.012 and 0.015) phosphors (point 1-8) excited at 450 nm, the inset photographs show the point 5 and the white-light from the fabricated WLED; and (b) corresponding electroluminescence spectrums of the phosphors. The forward bias current is 60 mA.

Tables (1)

Tables Icon

Table 1 Optical properties of white LEDs using Y3Al5O12: xCe3+, yCr3+ phosphors

Equations (7)

Equations on this page are rendered with MathJax. Learn more.

η ET =1 τ S τ S0
ln( η 0 η )C
η 0 η C α/3
ln( I 0 I )C
I 0 I C α/3
R CeCr =2 ( 3V 4π x c Z ) 1/3
I T = I 0 1+cexp( E a /kT)

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