Abstract

The red-emitting phosphor [K<sub>0.8</sub>Y<sub>0.65</sub>Eu<sup>3+</sup><sub>0.08</sub>][Mo<sub>0.2</sub>W<sub>0.8</sub>O<sub>4</sub>] was produced by a solid-state method. Through XRD spectra, DTA-TG and photo-luminescent analysis, the possible reaction path and the emission mechanism of the phosphor were mentioned, and the partial Judd–Ofelt parameters and quantum efficiency of Eu<sup>3+</sup> <sup>5</sup>D<sub>0</sub> energy level were calculated under 395 nm excitation. The results indicate that the red-emitting phosphor, of which the quantum efficiency is 13.43%, can become the potential applications for white light-emitting diode in the future.

© 2012 IEEE

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  1. A. H. Mueller, M. A. Petruska, M. Achermann, D. J. Werder, E. A. Akhadov, D. D. Koleske, M. A. Hoffbauer, V. I. Klimov, "Multicolor light-emitting diodes based on semiconductor nanocrystals encapsulated in GaN charge injection layers," Nanolett. 5, 1039 (2005).
  2. N. Narendran, Y. Gu, J. P. Freyssinier-Nova, Y. Zhu, "Extracting phosphor-scattered photons to improve white LED efficiency," Phys. Stat. Sol. (a) 202, R60 (2005).
  3. Y. Q. Li, A. C. Delsing, G. deWith, H. T. Hintzen, "Luminescence properties of ${\hbox{Eu}}_{2+}$-activated alkaline-earth silicon-oxynitride ${\hbox{MSi}}_{2}{\hbox{O}}_{2-\delta}{\hbox{N}}_{2+2/3\delta}$ (${\hbox{M}} = {\hbox{Ca}},{\hbox{Sr}}, {\hbox{Ba}}$): A promising class of novel LED conversion phosphors.," Chem. Mater. 17, 3242 (2005).
  4. M. S. Shur, A. Zukauskas, "Solid-state lighting: towards superior illumination," Proc. IEEE 93, 1073 (2005).
  5. M. J. Bowers, IIJ. R. McBride, S. J. Rosenthal, "White-light emission from magic-sized cadmium selenide nanocrystals," J. Amer. Chem. Soc. 127, 15378 (2005).
  6. X. X. Wang, Y. L. Xian, J. X. Shi, Q. Su, M. L. Gong, "The potential red emitting ${\hbox{Gd}}_{2-y}{\hbox{Eu}}_{y} {\hbox{(WO}}_{4})_{3-x}{\hbox{(MoO}}_{4})_{x}$ phosphors for UV InGaN-based light-emitting diode," Mater. Sci. Eng. B. 140, 69 (2007).
  7. Z. Ci, Y. Wang, J. Zhang, Y. Sun, "A strong correlation of crystal structure and Curie point of barium titanate ceramics with ${\hbox{Ba/Ti}}$ ratio of precursor composition," Phys. B 403, 670 (2008).
  8. P. Li, Z. Yang, Z. Wang, Q. Guo, "${\hbox{LiCaBO}}_{3}{:}{\hbox{Eu}}_{3+}$ phosphor for white light emitting diode," J. Rare Earth 27, 390 (2009).
  9. L. Zhou, J. Huang, F. Gong, Y. Lan, Z. Tong, J. Sun, J. Alloys, "A new red phosphor ${\hbox{LaNb}}_{0.70}{\hbox{V}}_{0.30}{\hbox{O}}_{4}{:}{\hbox{Eu}}_{3+}$ for white light-emitting diodes," Compd. 495, 268 (2010).
  10. J. Wang, X. Jing, C. Yan, J. Lin, "${\hbox{Ca}}_{1-2x}{\hbox{Eu}}_{x}{\hbox{Li}}_{x}{\hbox{MoO}}_{4}$: A novel red phosphor for solid-state lighting based on a GaN LED," J. Electrochem. Soc. 152, G186 (2005).
  11. F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, Q. Wu, "Luminescence investigation of red phosphors ${\hbox{Ca}}_{0.54}{\hbox{Sr}}_{0.34-1.5x}{\hbox{Eu}}_{0.08}{\hbox{Sm}}_{x}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}$ for UV-white LED device," J. Lumin. 129, 585 (2009).
  12. F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, Q. Wu, "Novel red phosphors for solid-state lighting: ${\hbox{Ca}}_{0.54}{\hbox{Sr}}_{0.34-1.5x}{\hbox{Eu}}_{0.08}{\hbox{La}}_{x}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}$," J. Alloy. Compd. 475, 387 (2009).
  13. F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "Preparation and luminescent properties of novel red phosphors for white-light emitting diodes (W-LEDs) application," Mater. Sci. Semicon. Proc. (2009) pp. 94.
  14. F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "Preparation of$ {\hbox{Sm}}^{3+}–{\hbox{Eu}}^{3+}$ coactivating red-emitting phosphors and its luminescent properties improvment by charge compensation," App. Phys. B-Lasers O 98, 417 (2009).
  15. Y. J. Chen, F. B. Cao, Y. W. Tian, L. J. Xiao, L. K. Li, "Optimized photoluminescence by charge compensation in a novel phosphor system," Phys. B: Condensed Mater. 405, 435 (2010).
  16. F. B. Cao, Y. J. Chen, Y. W. Tian, L. J. Xiao, L. K. Li, "Intense red phosphors for UV light emitting LED device," J. Nanosci. Nanotechnol. 10, 2060 (2010).
  17. F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "A red-emitting phosphor and its luminescent properties," Appl. Spectrosc. 64, 241 (2010).
  18. F. B. Cao, L. X. Li, Y. W. Tian, X. R. Wu, Y. J. Chen, L. J. Xiao, "${\hbox{Eu}}^{3+}–{\hbox{Y}}^{3+}$ coactivating ${\hbox{Na}}_{x}{\hbox{Y}}_{0.92-x/3}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}{\hbox{O}}_{0.5}{:}{\hbox{Eu}}^{3+}$," Appl. Spectrosc. 64, 1298 (2010).
  19. B. R. Judd, "Optical absorption intensities of rare-earth ions," Phys. Rev. 127, 750 (1962).
  20. G. S. Ofelt, "Intensities of crystal spectra of rare-earth ions," J. Chem. Phys. 37, 511 (1962).
  21. F. Liebau, Structural Chemistry of Silicates Structure, Bonding, and Classification Published (Springer-Verlag, 1985).
  22. J. K. Sheu, S. J. Chang, C. H. Kuo, Y. K. Su, L. W. Wu, Y. C. Lai, J. M. Tsai, G. C. Chi, R. K. Wu, "White-light emission from near UV InGaN–GaN LED chip precoated with blue/green/red phosphors," IEEE Photon. Technol. Lett. 15, 18 (2003).
  23. Y. Huh, J. Shim, Y. Kim, Y. R. Do, "Optical properties of three-band white light emitting diodes," J. Electrochem. Soc. 150, H57 (2003).
  24. Z. Wang, H. Liang, M. Gong, Q. Su, "A potential red-emitting phosphor for LED solid-state lighting," Electrochem. Solid State 8, H33 (2005).
  25. S. J. L. Ribeiro, K. Dahmouche, C. A. Ribeiro, C. V. Santilli, S. H. J. Pulcinelli, "Study of hybrid silica-polyethyleneglycol xerogels by ${\hbox{Eu}}^{3+}$ luminescence spectroscopy," J. Sol.–Gel Sci. Technol. 13, 427 (1998).
  26. M. H. V. Werts, R. T. F. Jukes, J. W. Verhoeven, "The emission spectrum and the radiative lifetime of ${\hbox{Eu}}^{3+}$ in luminescent lanthanide complexes," Phys. Chem. Chem. Phys. 4, 1542 (2002).
  27. F. Lei, B. Yan, "Hydrothermal synthesis and luminescence of ${\hbox{CaMO}}_{4}{:}{\hbox{RE}}^{3+}(M{:}{\hbox{W, Mo;}} RE{:} {\hbox{Eu, Tb)}}$ submicro-phosphors," J. Solid State Chem. 181, 855 (2008).
  28. J. C. Boyer, F. Vetrone, J. A. Capobianco, A. Speghini, M. Bettinelli, "Variation of fluorescence lifetimes and Judd-Ofelt parameters between ${\hbox{Eu}}^{3+}$ doped bulk and nanocrystalline cubic ${\hbox{Lu}}_{2}{\hbox{O}}_{3}$," J. Phys. Chem. B. 108, 20137 (2004).
  29. R. Reisfeld, E. Greenberg, R. N. Brown, M. G. Drexhage, C. K. Jrgensen, "Fluorescence of europium(III) in a flouride glass containing zirconium," Chem. Phys. Lett. 95, 91 (1983).
  30. C. A. Kodaira, A. Claudia, H. F. Brito, M. C. F. C. Felinto, "Luminescence investigation of ${\hbox{Eu}}^{3+}$ ion in the ${\hbox{RE}}_{2}{\hbox{(WO}}_{4})_{3}$ matrix (RE=La and Gd) produced using the Pechini method," J. Solid State Chem. 171, 401 (2003).
  31. K. Binnemans, K. Van Herck, C. Gorller-Walrand, "Influence of dipicolinate ligands on the spectroscopic properties of europium(III) in solution," Chem. Phys. Lett. 266, 297 (1997).
  32. E. E. S. Teotonio, J. G. P. Espinola, H. F. Brito, O. L. Malta, S. F. Oliveria, D. L. A. de Faria, C. M. S. Izumi, "Influence of the N-[methylpyridyl]acetamide ligands on the photoluminescent properties of Eu(III)-perchlorate complexes," Polyhedron 21, 1837 (2002).

2010 (5)

L. Zhou, J. Huang, F. Gong, Y. Lan, Z. Tong, J. Sun, J. Alloys, "A new red phosphor ${\hbox{LaNb}}_{0.70}{\hbox{V}}_{0.30}{\hbox{O}}_{4}{:}{\hbox{Eu}}_{3+}$ for white light-emitting diodes," Compd. 495, 268 (2010).

Y. J. Chen, F. B. Cao, Y. W. Tian, L. J. Xiao, L. K. Li, "Optimized photoluminescence by charge compensation in a novel phosphor system," Phys. B: Condensed Mater. 405, 435 (2010).

F. B. Cao, Y. J. Chen, Y. W. Tian, L. J. Xiao, L. K. Li, "Intense red phosphors for UV light emitting LED device," J. Nanosci. Nanotechnol. 10, 2060 (2010).

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "A red-emitting phosphor and its luminescent properties," Appl. Spectrosc. 64, 241 (2010).

F. B. Cao, L. X. Li, Y. W. Tian, X. R. Wu, Y. J. Chen, L. J. Xiao, "${\hbox{Eu}}^{3+}–{\hbox{Y}}^{3+}$ coactivating ${\hbox{Na}}_{x}{\hbox{Y}}_{0.92-x/3}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}{\hbox{O}}_{0.5}{:}{\hbox{Eu}}^{3+}$," Appl. Spectrosc. 64, 1298 (2010).

2009 (4)

P. Li, Z. Yang, Z. Wang, Q. Guo, "${\hbox{LiCaBO}}_{3}{:}{\hbox{Eu}}_{3+}$ phosphor for white light emitting diode," J. Rare Earth 27, 390 (2009).

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, Q. Wu, "Luminescence investigation of red phosphors ${\hbox{Ca}}_{0.54}{\hbox{Sr}}_{0.34-1.5x}{\hbox{Eu}}_{0.08}{\hbox{Sm}}_{x}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}$ for UV-white LED device," J. Lumin. 129, 585 (2009).

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, Q. Wu, "Novel red phosphors for solid-state lighting: ${\hbox{Ca}}_{0.54}{\hbox{Sr}}_{0.34-1.5x}{\hbox{Eu}}_{0.08}{\hbox{La}}_{x}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}$," J. Alloy. Compd. 475, 387 (2009).

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "Preparation of$ {\hbox{Sm}}^{3+}–{\hbox{Eu}}^{3+}$ coactivating red-emitting phosphors and its luminescent properties improvment by charge compensation," App. Phys. B-Lasers O 98, 417 (2009).

2008 (2)

Z. Ci, Y. Wang, J. Zhang, Y. Sun, "A strong correlation of crystal structure and Curie point of barium titanate ceramics with ${\hbox{Ba/Ti}}$ ratio of precursor composition," Phys. B 403, 670 (2008).

F. Lei, B. Yan, "Hydrothermal synthesis and luminescence of ${\hbox{CaMO}}_{4}{:}{\hbox{RE}}^{3+}(M{:}{\hbox{W, Mo;}} RE{:} {\hbox{Eu, Tb)}}$ submicro-phosphors," J. Solid State Chem. 181, 855 (2008).

2007 (1)

X. X. Wang, Y. L. Xian, J. X. Shi, Q. Su, M. L. Gong, "The potential red emitting ${\hbox{Gd}}_{2-y}{\hbox{Eu}}_{y} {\hbox{(WO}}_{4})_{3-x}{\hbox{(MoO}}_{4})_{x}$ phosphors for UV InGaN-based light-emitting diode," Mater. Sci. Eng. B. 140, 69 (2007).

2005 (7)

J. Wang, X. Jing, C. Yan, J. Lin, "${\hbox{Ca}}_{1-2x}{\hbox{Eu}}_{x}{\hbox{Li}}_{x}{\hbox{MoO}}_{4}$: A novel red phosphor for solid-state lighting based on a GaN LED," J. Electrochem. Soc. 152, G186 (2005).

A. H. Mueller, M. A. Petruska, M. Achermann, D. J. Werder, E. A. Akhadov, D. D. Koleske, M. A. Hoffbauer, V. I. Klimov, "Multicolor light-emitting diodes based on semiconductor nanocrystals encapsulated in GaN charge injection layers," Nanolett. 5, 1039 (2005).

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, Y. Zhu, "Extracting phosphor-scattered photons to improve white LED efficiency," Phys. Stat. Sol. (a) 202, R60 (2005).

Y. Q. Li, A. C. Delsing, G. deWith, H. T. Hintzen, "Luminescence properties of ${\hbox{Eu}}_{2+}$-activated alkaline-earth silicon-oxynitride ${\hbox{MSi}}_{2}{\hbox{O}}_{2-\delta}{\hbox{N}}_{2+2/3\delta}$ (${\hbox{M}} = {\hbox{Ca}},{\hbox{Sr}}, {\hbox{Ba}}$): A promising class of novel LED conversion phosphors.," Chem. Mater. 17, 3242 (2005).

M. S. Shur, A. Zukauskas, "Solid-state lighting: towards superior illumination," Proc. IEEE 93, 1073 (2005).

M. J. Bowers, IIJ. R. McBride, S. J. Rosenthal, "White-light emission from magic-sized cadmium selenide nanocrystals," J. Amer. Chem. Soc. 127, 15378 (2005).

Z. Wang, H. Liang, M. Gong, Q. Su, "A potential red-emitting phosphor for LED solid-state lighting," Electrochem. Solid State 8, H33 (2005).

2004 (1)

J. C. Boyer, F. Vetrone, J. A. Capobianco, A. Speghini, M. Bettinelli, "Variation of fluorescence lifetimes and Judd-Ofelt parameters between ${\hbox{Eu}}^{3+}$ doped bulk and nanocrystalline cubic ${\hbox{Lu}}_{2}{\hbox{O}}_{3}$," J. Phys. Chem. B. 108, 20137 (2004).

2003 (3)

C. A. Kodaira, A. Claudia, H. F. Brito, M. C. F. C. Felinto, "Luminescence investigation of ${\hbox{Eu}}^{3+}$ ion in the ${\hbox{RE}}_{2}{\hbox{(WO}}_{4})_{3}$ matrix (RE=La and Gd) produced using the Pechini method," J. Solid State Chem. 171, 401 (2003).

J. K. Sheu, S. J. Chang, C. H. Kuo, Y. K. Su, L. W. Wu, Y. C. Lai, J. M. Tsai, G. C. Chi, R. K. Wu, "White-light emission from near UV InGaN–GaN LED chip precoated with blue/green/red phosphors," IEEE Photon. Technol. Lett. 15, 18 (2003).

Y. Huh, J. Shim, Y. Kim, Y. R. Do, "Optical properties of three-band white light emitting diodes," J. Electrochem. Soc. 150, H57 (2003).

2002 (2)

M. H. V. Werts, R. T. F. Jukes, J. W. Verhoeven, "The emission spectrum and the radiative lifetime of ${\hbox{Eu}}^{3+}$ in luminescent lanthanide complexes," Phys. Chem. Chem. Phys. 4, 1542 (2002).

E. E. S. Teotonio, J. G. P. Espinola, H. F. Brito, O. L. Malta, S. F. Oliveria, D. L. A. de Faria, C. M. S. Izumi, "Influence of the N-[methylpyridyl]acetamide ligands on the photoluminescent properties of Eu(III)-perchlorate complexes," Polyhedron 21, 1837 (2002).

1998 (1)

S. J. L. Ribeiro, K. Dahmouche, C. A. Ribeiro, C. V. Santilli, S. H. J. Pulcinelli, "Study of hybrid silica-polyethyleneglycol xerogels by ${\hbox{Eu}}^{3+}$ luminescence spectroscopy," J. Sol.–Gel Sci. Technol. 13, 427 (1998).

1997 (1)

K. Binnemans, K. Van Herck, C. Gorller-Walrand, "Influence of dipicolinate ligands on the spectroscopic properties of europium(III) in solution," Chem. Phys. Lett. 266, 297 (1997).

1983 (1)

R. Reisfeld, E. Greenberg, R. N. Brown, M. G. Drexhage, C. K. Jrgensen, "Fluorescence of europium(III) in a flouride glass containing zirconium," Chem. Phys. Lett. 95, 91 (1983).

1962 (2)

B. R. Judd, "Optical absorption intensities of rare-earth ions," Phys. Rev. 127, 750 (1962).

G. S. Ofelt, "Intensities of crystal spectra of rare-earth ions," J. Chem. Phys. 37, 511 (1962).

App. Phys. B-Lasers O (1)

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "Preparation of$ {\hbox{Sm}}^{3+}–{\hbox{Eu}}^{3+}$ coactivating red-emitting phosphors and its luminescent properties improvment by charge compensation," App. Phys. B-Lasers O 98, 417 (2009).

Appl. Spectrosc. (2)

Chem. Mater. (1)

Y. Q. Li, A. C. Delsing, G. deWith, H. T. Hintzen, "Luminescence properties of ${\hbox{Eu}}_{2+}$-activated alkaline-earth silicon-oxynitride ${\hbox{MSi}}_{2}{\hbox{O}}_{2-\delta}{\hbox{N}}_{2+2/3\delta}$ (${\hbox{M}} = {\hbox{Ca}},{\hbox{Sr}}, {\hbox{Ba}}$): A promising class of novel LED conversion phosphors.," Chem. Mater. 17, 3242 (2005).

Chem. Phys. Lett. (2)

K. Binnemans, K. Van Herck, C. Gorller-Walrand, "Influence of dipicolinate ligands on the spectroscopic properties of europium(III) in solution," Chem. Phys. Lett. 266, 297 (1997).

R. Reisfeld, E. Greenberg, R. N. Brown, M. G. Drexhage, C. K. Jrgensen, "Fluorescence of europium(III) in a flouride glass containing zirconium," Chem. Phys. Lett. 95, 91 (1983).

Compd. (1)

L. Zhou, J. Huang, F. Gong, Y. Lan, Z. Tong, J. Sun, J. Alloys, "A new red phosphor ${\hbox{LaNb}}_{0.70}{\hbox{V}}_{0.30}{\hbox{O}}_{4}{:}{\hbox{Eu}}_{3+}$ for white light-emitting diodes," Compd. 495, 268 (2010).

Electrochem. Solid State (1)

Z. Wang, H. Liang, M. Gong, Q. Su, "A potential red-emitting phosphor for LED solid-state lighting," Electrochem. Solid State 8, H33 (2005).

IEEE Photon. Technol. Lett. (1)

J. K. Sheu, S. J. Chang, C. H. Kuo, Y. K. Su, L. W. Wu, Y. C. Lai, J. M. Tsai, G. C. Chi, R. K. Wu, "White-light emission from near UV InGaN–GaN LED chip precoated with blue/green/red phosphors," IEEE Photon. Technol. Lett. 15, 18 (2003).

J. Alloy. Compd. (1)

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, Q. Wu, "Novel red phosphors for solid-state lighting: ${\hbox{Ca}}_{0.54}{\hbox{Sr}}_{0.34-1.5x}{\hbox{Eu}}_{0.08}{\hbox{La}}_{x}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}$," J. Alloy. Compd. 475, 387 (2009).

J. Amer. Chem. Soc. (1)

M. J. Bowers, IIJ. R. McBride, S. J. Rosenthal, "White-light emission from magic-sized cadmium selenide nanocrystals," J. Amer. Chem. Soc. 127, 15378 (2005).

J. Chem. Phys. (1)

G. S. Ofelt, "Intensities of crystal spectra of rare-earth ions," J. Chem. Phys. 37, 511 (1962).

J. Electrochem. Soc. (2)

J. Wang, X. Jing, C. Yan, J. Lin, "${\hbox{Ca}}_{1-2x}{\hbox{Eu}}_{x}{\hbox{Li}}_{x}{\hbox{MoO}}_{4}$: A novel red phosphor for solid-state lighting based on a GaN LED," J. Electrochem. Soc. 152, G186 (2005).

Y. Huh, J. Shim, Y. Kim, Y. R. Do, "Optical properties of three-band white light emitting diodes," J. Electrochem. Soc. 150, H57 (2003).

J. Lumin. (1)

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, Q. Wu, "Luminescence investigation of red phosphors ${\hbox{Ca}}_{0.54}{\hbox{Sr}}_{0.34-1.5x}{\hbox{Eu}}_{0.08}{\hbox{Sm}}_{x}{\hbox{(MoO}}_{4})_{y}{\hbox{(WO}}_{4})_{1-y}$ for UV-white LED device," J. Lumin. 129, 585 (2009).

J. Nanosci. Nanotechnol. (1)

F. B. Cao, Y. J. Chen, Y. W. Tian, L. J. Xiao, L. K. Li, "Intense red phosphors for UV light emitting LED device," J. Nanosci. Nanotechnol. 10, 2060 (2010).

J. Phys. Chem. B. (1)

J. C. Boyer, F. Vetrone, J. A. Capobianco, A. Speghini, M. Bettinelli, "Variation of fluorescence lifetimes and Judd-Ofelt parameters between ${\hbox{Eu}}^{3+}$ doped bulk and nanocrystalline cubic ${\hbox{Lu}}_{2}{\hbox{O}}_{3}$," J. Phys. Chem. B. 108, 20137 (2004).

J. Rare Earth (1)

P. Li, Z. Yang, Z. Wang, Q. Guo, "${\hbox{LiCaBO}}_{3}{:}{\hbox{Eu}}_{3+}$ phosphor for white light emitting diode," J. Rare Earth 27, 390 (2009).

J. Sol.–Gel Sci. Technol. (1)

S. J. L. Ribeiro, K. Dahmouche, C. A. Ribeiro, C. V. Santilli, S. H. J. Pulcinelli, "Study of hybrid silica-polyethyleneglycol xerogels by ${\hbox{Eu}}^{3+}$ luminescence spectroscopy," J. Sol.–Gel Sci. Technol. 13, 427 (1998).

J. Solid State Chem. (2)

F. Lei, B. Yan, "Hydrothermal synthesis and luminescence of ${\hbox{CaMO}}_{4}{:}{\hbox{RE}}^{3+}(M{:}{\hbox{W, Mo;}} RE{:} {\hbox{Eu, Tb)}}$ submicro-phosphors," J. Solid State Chem. 181, 855 (2008).

C. A. Kodaira, A. Claudia, H. F. Brito, M. C. F. C. Felinto, "Luminescence investigation of ${\hbox{Eu}}^{3+}$ ion in the ${\hbox{RE}}_{2}{\hbox{(WO}}_{4})_{3}$ matrix (RE=La and Gd) produced using the Pechini method," J. Solid State Chem. 171, 401 (2003).

Mater. Sci. Eng. B. (1)

X. X. Wang, Y. L. Xian, J. X. Shi, Q. Su, M. L. Gong, "The potential red emitting ${\hbox{Gd}}_{2-y}{\hbox{Eu}}_{y} {\hbox{(WO}}_{4})_{3-x}{\hbox{(MoO}}_{4})_{x}$ phosphors for UV InGaN-based light-emitting diode," Mater. Sci. Eng. B. 140, 69 (2007).

Nanolett. (1)

A. H. Mueller, M. A. Petruska, M. Achermann, D. J. Werder, E. A. Akhadov, D. D. Koleske, M. A. Hoffbauer, V. I. Klimov, "Multicolor light-emitting diodes based on semiconductor nanocrystals encapsulated in GaN charge injection layers," Nanolett. 5, 1039 (2005).

Phys. B (1)

Z. Ci, Y. Wang, J. Zhang, Y. Sun, "A strong correlation of crystal structure and Curie point of barium titanate ceramics with ${\hbox{Ba/Ti}}$ ratio of precursor composition," Phys. B 403, 670 (2008).

Phys. B: Condensed Mater. (1)

Y. J. Chen, F. B. Cao, Y. W. Tian, L. J. Xiao, L. K. Li, "Optimized photoluminescence by charge compensation in a novel phosphor system," Phys. B: Condensed Mater. 405, 435 (2010).

Phys. Chem. Chem. Phys. (1)

M. H. V. Werts, R. T. F. Jukes, J. W. Verhoeven, "The emission spectrum and the radiative lifetime of ${\hbox{Eu}}^{3+}$ in luminescent lanthanide complexes," Phys. Chem. Chem. Phys. 4, 1542 (2002).

Phys. Rev. (1)

B. R. Judd, "Optical absorption intensities of rare-earth ions," Phys. Rev. 127, 750 (1962).

Phys. Stat. Sol. (a) (1)

N. Narendran, Y. Gu, J. P. Freyssinier-Nova, Y. Zhu, "Extracting phosphor-scattered photons to improve white LED efficiency," Phys. Stat. Sol. (a) 202, R60 (2005).

Polyhedron (1)

E. E. S. Teotonio, J. G. P. Espinola, H. F. Brito, O. L. Malta, S. F. Oliveria, D. L. A. de Faria, C. M. S. Izumi, "Influence of the N-[methylpyridyl]acetamide ligands on the photoluminescent properties of Eu(III)-perchlorate complexes," Polyhedron 21, 1837 (2002).

Proc. IEEE (1)

M. S. Shur, A. Zukauskas, "Solid-state lighting: towards superior illumination," Proc. IEEE 93, 1073 (2005).

Other (2)

F. Liebau, Structural Chemistry of Silicates Structure, Bonding, and Classification Published (Springer-Verlag, 1985).

F. B. Cao, Y. W. Tian, Y. J. Chen, L. J. Xiao, L. K. Li, "Preparation and luminescent properties of novel red phosphors for white-light emitting diodes (W-LEDs) application," Mater. Sci. Semicon. Proc. (2009) pp. 94.

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