Abstract

We have synthesized a Eu3+-activated KSr4(BO3)3 red phosphor by solid state reactions. Rietveld refinement on X-ray diffraction data indicates that Eu3+ ions are inclined to occupy Sr(2) (8c) site in the structure of KSr4(BO3)3. The composition-optimized KSr4(BO3)3:Eu3+ exhibits a dominant emission peak at 612 nm (5D0-7F2) with CIE coordinates of (0.64, 0.35) under the excitation at 394 nm. By codoping M+ ions (M = Li, Na, and K) in KSr4(BO3)3:Eu3+ to compensate the charge unbalance, the intensities of emission spectra at 612 nm can be increased greatly, but the CIE coordinates will not be changed. The red-emitting KSr4(BO3)3:Eu3+ phosphor may be potential candidate in the fabrication of white light-emitting diodes (LEDs).

© 2011 OSA

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2011 (6)

J. Ruan, R. J. Xie, N. Hirosaki, and T. Takeda, “Nitrogen gas pressure synthesis and photoluminescent properties of orange-red SrAlSi4N7:Eu2+ phosphors for white light-emitting diodes,” J. Am. Ceram. Soc. 94(2), 536–542 (2011).
[CrossRef]

A. Bessière, S. Jacquart, K. Priolkar, A. Lecointre, B. Viana, and D. Gourier, “ZnGa2O4:Cr3+: a new red long-lasting phosphor with high brightness,” Opt. Express 19(11), 10131–10137 (2011).
[CrossRef] [PubMed]

Y. 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]

T. Liu, B. M. Cheng, S. F. Hu, and R.-S. Liu, “Highly stable red oxynitride beta-SiAlON:Pr3+ phosphor for light-emitting diodes,” Chem. Mater. 23(16), 3698–3705 (2011).
[CrossRef]

X. M. Zhang and H. J. Seo, “Luminescence properties of novel Sm3+, Dy3+ doped LaMoBO6 phosphors,” J. Alloy. Comp. 509(5), 2007–2010 (2011).
[CrossRef]

C. F. Guo, X. Ding, H. J. Seo, Z. Ren, and J. Bai, “Luminescent properties of UV excitable blue emitting phosphors,” J. Alloy. Comp. 509(14), 4871–4874 (2011).
[CrossRef]

2010 (5)

2009 (4)

V. R. Bandi, Y. T. Nien, T. H. Lu, and I. G. Chen, “Effect of calcination temperature and concentration on luminescence properties of novel Ca3Y2Si3O12:Eu phosphors,” J. Am. Ceram. Soc. 92(12), 2953–2956 (2009).
[CrossRef]

C. J. Duan, A. C. A. Delsing, and H. T. Hintzen, “Photoluminescence properties of novel red-emitting Mn2+-activated MZnOS (M=Ca, Ba) phosphor,” Chem. Mater. 21(6), 1010–1016 (2009).
[CrossRef]

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

L. H. Jiang, Y. L. Zhang, C. Y. Li, J. Q. Hao, and Q. Su, “Synthesis, photoluminescence, thermoluminescence and dosimetry properties of novel phosphor KSr4(BO3)3:Ce,” J. Alloy. Comp. 482(1-2), 313–316 (2009).
[CrossRef]

2008 (2)

S. Yuan, Y. Yang, X. Zhang, F. Tessier, F. Cheviré, J. L. Adam, B. Moine, and G. Chen, “Eu2+ and Mn2+ codoped Ba2Mg(BO3)2--new red phosphor for white LEDs,” Opt. Lett. 33(23), 2865–2867 (2008).
[CrossRef] [PubMed]

S. Shi, J. Gao, and J. Zhou, “Effects of charge compensation on the luminescence behavior of Eu3+ activated CaWO4 phosphor,” Opt. Mater. 30(10), 1616–1620 (2008).
[CrossRef]

2007 (8)

J. Liu, H. Lian, and C. Shi, “Improved optical photoluminescence by charge compensation in the phosphor system CaMoO4:Eu3+,” Opt. Mater. 29(12), 1591–1594 (2007).
[CrossRef]

R. J. Xie, N. Hirosaki, N. Kimura, K. Sakuma, and M. Mitomo, “2-phosphor-converted white light-emitting diodes using oxynitride/nitride phosphors,” Appl. Phys. Lett. 90(19), 191101 (2007).
[CrossRef]

T. Hashimoto, F. Wu, J. S. Speck, and S. Nakamura, “A GaN bulk crystal with improved structural quality grown by the ammonothermal method,” Nat. Mater. 6(8), 568–571 (2007).
[CrossRef] [PubMed]

Z. Hao, J. Zhang, X. Zhang, X. Sun, Y. Luo, S. Lu, and X. Wang, “White light emitting diode by using α-Ca2P2O7: Eu2+, Mn2+ phosphor,” Appl. Phys. Lett. 90(26), 261113 (2007).
[CrossRef]

W. J. Yang and T. M. Chen, “Ce3+/Eu2+ codoped Ba2ZnS3: a blue radiation-converting phosphor for white light-emitting diodes,” Appl. Phys. Lett. 90(17), 171908 (2007).
[CrossRef]

C. K. Chang and T. M. Chen, “Sr3B2O6:Ce3+, Eu2+: a potential single-phased white-emitting borate phosphor for ultraviolet light-emitting diodes,” Appl. Phys. Lett. 91(8), 081902 (2007).
[CrossRef]

L. Wu, Y. Zhang, Y. F. Kong, T. Q. Sun, J. J. Xu, and X. L. Chen, “Structure determination of novel orthoborate NaMgBO3: a promising birefringent crystal,” Inorg. Chem. 46(13), 5207–5211 (2007).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, X. L. Chen, Y. F. Kong, T. Q. Sun, J. J. Xu, and Y. P. Xu, “The Na2O-SrO-B2O3 diagram in the B-rich part and the crystal structure of NaSrB5O9,” J. Solid State Chem. 180(4), 1470–1475 (2007).
[CrossRef]

2006 (4)

L. Wu, X. L. Chen, Y. Zhang, Y. F. Kong, J. J. Xu, and Y. P. Xu, “Ab Initio structure determination of novel borate NaSrBO3,” J. Solid State Chem. 179(4), 1219–1224 (2006).
[CrossRef]

L. Wu, X. L. Chen, Y. P. Xu, and Y. P. Sun, “Structure determination and relative properties of novel noncentrosymmetric borates MM’4(BO3)3 (M = Na, M’ = Ca and M = K, M’ = Ca, Sr),” Inorg. Chem. 45(7), 3042–3047 (2006).
[CrossRef] [PubMed]

R. J. Xie, N. Hirosaki, M. Mitomo, K. Takahashi, and K. Sakuma, “Highly efficient white-light-emitting diodes fabricate with short-wavelength yellow oxynitride phosphors,” Appl. Phys. Lett. 88(10), 101104 (2006).
[CrossRef]

R. J. Xie, N. Hirosaki, M. Mitomo, K. Sakuma, and N. Kimura, “Wavelength-tunable and thermally stable Li-α-sialon:Eu2+ oxynitride phosphors for white light-emitting diodes,” Appl. Phys. Lett. 89(24), 241103 (2006).
[CrossRef]

2005 (3)

E. F. Schubert and J. K. Kim, “Solid-state light sources getting smart,” Science 308(5726), 1274–1278 (2005).
[CrossRef] [PubMed]

N. Hirosaki, R. J. Xie, K. Kimoto, T. Sekiguchi, Y. Yamamoto, T. Suehiro, and M. Mitomo, “Characterization and properties of green-emitting β-SiAlON:Eu2+ powder phosphors for white light-emitting diodes,” Appl. Phys. Lett. 86(21), 211905 (2005).
[CrossRef]

L. Wu, X. L. Chen, H. Li, M. He, Y. P. Xu, and X. Z. Li, “Structure determination and relative properties of novel cubic borates MM’4(BO3)3 (M = Li, M’ = Sr; M = Na, M’ = Sr, Ba),” Inorg. Chem. 44(18), 6409–6414 (2005).
[CrossRef] [PubMed]

2003 (1)

C. A. Kodaira, H. F. Brito, and M. Felinto, “Luminescence investigation of Eu3+ ion in the RE2(WO4)3 matrix (RE=La and Gd) produced using the pechini method,” J. Solid State Chem. 171(1-2), 401–407 (2003).
[CrossRef]

1997 (1)

F. A. Ponce and D. P. Bour, “Nitride-based semiconductors for blue and green light-emitting devices,” Nature 386(6623), 351–359 (1997).
[CrossRef]

1990 (1)

M. Ando and Y. A. Ono, “Role of Eu2+ luminescent centers in the electro-optical characteristic of red-emitting CaS:Eu thin-film electroluminescent devices with memory,” J. Appl. Phys. 68(7), 3578–3583 (1990).
[CrossRef]

1976 (1)

R. D. Shannon, “Revised effective ionic radii and systematic studies of interatomic distances in halides and chalcogenides,” Acta Crystallogr. A32, 751–767 (1976).

1969 (2)

H. M. Rietveld, “A profile refinement method for nuclear and magnetic structures,” J. Appl. Cryst. 2(2), 65–71 (1969).
[CrossRef]

G. Blasse, “Energy transfer in oxidic phosphors,” Philips Res. Rep. 24, 131–144 (1969).

1967 (2)

L. G. Van Uitert, “Characterization of energy transfer interactions between rare earth ions,” J. Electrochem. Soc. 114(10), 1048–1053 (1967).
[CrossRef]

H. M. Rietveld, “Line profiles of neutron powder-diffraction peaks for structure refinement,” Acta Crystallogr. 22(1), 151–152 (1967).
[CrossRef]

1966 (1)

G. Blasse, A. Bril, and W. C. Nieuwpoort, “On the Eu3+ fluorescente in mixed metal oxides part I- the crystal structure sensitivity of the intensity ratio of electric and magnetic dipole emission,” J. Phys. Chem. Solids 27(10), 1587–1592 (1966).
[CrossRef]

1954 (1)

D. L. Dexter and J. H. Schulman, “Theory of concentration quencing in inorganic phosphors,” J. Chem. Phys. 22(6), 1063–1070 (1954).
[CrossRef]

Adam, J. L.

Ando, M.

M. Ando and Y. A. Ono, “Role of Eu2+ luminescent centers in the electro-optical characteristic of red-emitting CaS:Eu thin-film electroluminescent devices with memory,” J. Appl. Phys. 68(7), 3578–3583 (1990).
[CrossRef]

auf der Günne, J. S.

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

Bai, J.

C. F. Guo, X. Ding, H. J. Seo, Z. Ren, and J. Bai, “Luminescent properties of UV excitable blue emitting phosphors,” J. Alloy. Comp. 509(14), 4871–4874 (2011).
[CrossRef]

Bandi, V. R.

V. R. Bandi, Y. T. Nien, T. H. Lu, and I. G. Chen, “Effect of calcination temperature and concentration on luminescence properties of novel Ca3Y2Si3O12:Eu phosphors,” J. Am. Ceram. Soc. 92(12), 2953–2956 (2009).
[CrossRef]

Baumann, V.

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

Bessière, A.

Biggs, M. M.

V. Kumar, S. S. Pitale, V. Mishra, I. M. Nagpure, M. M. Biggs, O. M. Ntwaeaborwa, and H. C. Swart, “Luminescence investigations of Ce3+ doped CaS nanophosphors,” J. Alloy. Comp. 492(1-2), L8–L12 (2010).
[CrossRef]

Blasse, G.

G. Blasse, “Energy transfer in oxidic phosphors,” Philips Res. Rep. 24, 131–144 (1969).

G. Blasse, A. Bril, and W. C. Nieuwpoort, “On the Eu3+ fluorescente in mixed metal oxides part I- the crystal structure sensitivity of the intensity ratio of electric and magnetic dipole emission,” J. Phys. Chem. Solids 27(10), 1587–1592 (1966).
[CrossRef]

Bour, D. P.

F. A. Ponce and D. P. Bour, “Nitride-based semiconductors for blue and green light-emitting devices,” Nature 386(6623), 351–359 (1997).
[CrossRef]

Bril, A.

G. Blasse, A. Bril, and W. C. Nieuwpoort, “On the Eu3+ fluorescente in mixed metal oxides part I- the crystal structure sensitivity of the intensity ratio of electric and magnetic dipole emission,” J. Phys. Chem. Solids 27(10), 1587–1592 (1966).
[CrossRef]

Brito, H. F.

C. A. Kodaira, H. F. Brito, and M. Felinto, “Luminescence investigation of Eu3+ ion in the RE2(WO4)3 matrix (RE=La and Gd) produced using the pechini method,” J. Solid State Chem. 171(1-2), 401–407 (2003).
[CrossRef]

Chang, C. K.

C. K. Chang and T. M. Chen, “Sr3B2O6:Ce3+, Eu2+: a potential single-phased white-emitting borate phosphor for ultraviolet light-emitting diodes,” Appl. Phys. Lett. 91(8), 081902 (2007).
[CrossRef]

Chen, G.

Chen, I. G.

V. R. Bandi, Y. T. Nien, T. H. Lu, and I. G. Chen, “Effect of calcination temperature and concentration on luminescence properties of novel Ca3Y2Si3O12:Eu phosphors,” J. Am. Ceram. Soc. 92(12), 2953–2956 (2009).
[CrossRef]

Chen, T. M.

C. H. Huang and T. M. Chen, “Ca9La(PO4)7:Eu2+,Mn2+: an emission-tunable phosphor through efficient energy transfer for white light-emitting diodes,” Opt. Express 18(5), 5089–5099 (2010).
[CrossRef] [PubMed]

T. W. Kuo, C. H. Huang, and T. M. Chen, “Novel yellowish-orange Sr8Al12O24S2:Eu2+ phosphor for application in blue light-emitting diode based white LED,” Opt. Express 18(S2Suppl 2), A231–A236 (2010).
[CrossRef] [PubMed]

W. J. Yang and T. M. Chen, “Ce3+/Eu2+ codoped Ba2ZnS3: a blue radiation-converting phosphor for white light-emitting diodes,” Appl. Phys. Lett. 90(17), 171908 (2007).
[CrossRef]

C. K. Chang and T. M. Chen, “Sr3B2O6:Ce3+, Eu2+: a potential single-phased white-emitting borate phosphor for ultraviolet light-emitting diodes,” Appl. Phys. Lett. 91(8), 081902 (2007).
[CrossRef]

Chen, X. L.

L. Wu, Y. Zhang, Y. F. Kong, T. Q. Sun, J. J. Xu, and X. L. Chen, “Structure determination of novel orthoborate NaMgBO3: a promising birefringent crystal,” Inorg. Chem. 46(13), 5207–5211 (2007).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, X. L. Chen, Y. F. Kong, T. Q. Sun, J. J. Xu, and Y. P. Xu, “The Na2O-SrO-B2O3 diagram in the B-rich part and the crystal structure of NaSrB5O9,” J. Solid State Chem. 180(4), 1470–1475 (2007).
[CrossRef]

L. Wu, X. L. Chen, Y. Zhang, Y. F. Kong, J. J. Xu, and Y. P. Xu, “Ab Initio structure determination of novel borate NaSrBO3,” J. Solid State Chem. 179(4), 1219–1224 (2006).
[CrossRef]

L. Wu, X. L. Chen, Y. P. Xu, and Y. P. Sun, “Structure determination and relative properties of novel noncentrosymmetric borates MM’4(BO3)3 (M = Na, M’ = Ca and M = K, M’ = Ca, Sr),” Inorg. Chem. 45(7), 3042–3047 (2006).
[CrossRef] [PubMed]

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[CrossRef]

L. Wu, X. L. Chen, Y. P. Xu, and Y. P. Sun, “Structure determination and relative properties of novel noncentrosymmetric borates MM’4(BO3)3 (M = Na, M’ = Ca and M = K, M’ = Ca, Sr),” Inorg. Chem. 45(7), 3042–3047 (2006).
[CrossRef] [PubMed]

L. Wu, X. L. Chen, H. Li, M. He, Y. P. Xu, and X. Z. Li, “Structure determination and relative properties of novel cubic borates MM’4(BO3)3 (M = Li, M’ = Sr; M = Na, M’ = Sr, Ba),” Inorg. Chem. 44(18), 6409–6414 (2005).
[CrossRef] [PubMed]

Xie, R. J.

J. Ruan, R. J. Xie, N. Hirosaki, and T. Takeda, “Nitrogen gas pressure synthesis and photoluminescent properties of orange-red SrAlSi4N7:Eu2+ phosphors for white light-emitting diodes,” J. Am. Ceram. Soc. 94(2), 536–542 (2011).
[CrossRef]

R. J. Xie, N. Hirosaki, N. Kimura, K. Sakuma, and M. Mitomo, “2-phosphor-converted white light-emitting diodes using oxynitride/nitride phosphors,” Appl. Phys. Lett. 90(19), 191101 (2007).
[CrossRef]

R. J. Xie, N. Hirosaki, M. Mitomo, K. Takahashi, and K. Sakuma, “Highly efficient white-light-emitting diodes fabricate with short-wavelength yellow oxynitride phosphors,” Appl. Phys. Lett. 88(10), 101104 (2006).
[CrossRef]

R. J. Xie, N. Hirosaki, M. Mitomo, K. Sakuma, and N. Kimura, “Wavelength-tunable and thermally stable Li-α-sialon:Eu2+ oxynitride phosphors for white light-emitting diodes,” Appl. Phys. Lett. 89(24), 241103 (2006).
[CrossRef]

N. Hirosaki, R. J. Xie, K. Kimoto, T. Sekiguchi, Y. Yamamoto, T. Suehiro, and M. Mitomo, “Characterization and properties of green-emitting β-SiAlON:Eu2+ powder phosphors for white light-emitting diodes,” Appl. Phys. Lett. 86(21), 211905 (2005).
[CrossRef]

Xu, J. J.

L. Wu, J. C. Sun, Y. Zhang, S. F. Jin, Y. F. Kong, and J. J. Xu, “Structure determination and relative properties of novel chiral orthoborate KMgBO3,” Inorg. Chem. 49(6), 2715–2720 (2010).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, Y. F. Kong, T. Q. Sun, J. J. Xu, and X. L. Chen, “Structure determination of novel orthoborate NaMgBO3: a promising birefringent crystal,” Inorg. Chem. 46(13), 5207–5211 (2007).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, X. L. Chen, Y. F. Kong, T. Q. Sun, J. J. Xu, and Y. P. Xu, “The Na2O-SrO-B2O3 diagram in the B-rich part and the crystal structure of NaSrB5O9,” J. Solid State Chem. 180(4), 1470–1475 (2007).
[CrossRef]

L. Wu, X. L. Chen, Y. Zhang, Y. F. Kong, J. J. Xu, and Y. P. Xu, “Ab Initio structure determination of novel borate NaSrBO3,” J. Solid State Chem. 179(4), 1219–1224 (2006).
[CrossRef]

Xu, Y. P.

L. Wu, Y. Zhang, X. L. Chen, Y. F. Kong, T. Q. Sun, J. J. Xu, and Y. P. Xu, “The Na2O-SrO-B2O3 diagram in the B-rich part and the crystal structure of NaSrB5O9,” J. Solid State Chem. 180(4), 1470–1475 (2007).
[CrossRef]

L. Wu, X. L. Chen, Y. Zhang, Y. F. Kong, J. J. Xu, and Y. P. Xu, “Ab Initio structure determination of novel borate NaSrBO3,” J. Solid State Chem. 179(4), 1219–1224 (2006).
[CrossRef]

L. Wu, X. L. Chen, Y. P. Xu, and Y. P. Sun, “Structure determination and relative properties of novel noncentrosymmetric borates MM’4(BO3)3 (M = Na, M’ = Ca and M = K, M’ = Ca, Sr),” Inorg. Chem. 45(7), 3042–3047 (2006).
[CrossRef] [PubMed]

L. Wu, X. L. Chen, H. Li, M. He, Y. P. Xu, and X. Z. Li, “Structure determination and relative properties of novel cubic borates MM’4(BO3)3 (M = Li, M’ = Sr; M = Na, M’ = Sr, Ba),” Inorg. Chem. 44(18), 6409–6414 (2005).
[CrossRef] [PubMed]

Yamamoto, Y.

N. Hirosaki, R. J. Xie, K. Kimoto, T. Sekiguchi, Y. Yamamoto, T. Suehiro, and M. Mitomo, “Characterization and properties of green-emitting β-SiAlON:Eu2+ powder phosphors for white light-emitting diodes,” Appl. Phys. Lett. 86(21), 211905 (2005).
[CrossRef]

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[CrossRef]

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Yuan, S.

Zhang, J.

Z. Hao, J. Zhang, X. Zhang, X. Sun, Y. Luo, S. Lu, and X. Wang, “White light emitting diode by using α-Ca2P2O7: Eu2+, Mn2+ phosphor,” Appl. Phys. Lett. 90(26), 261113 (2007).
[CrossRef]

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S. Yuan, Y. Yang, X. Zhang, F. Tessier, F. Cheviré, J. L. Adam, B. Moine, and G. Chen, “Eu2+ and Mn2+ codoped Ba2Mg(BO3)2--new red phosphor for white LEDs,” Opt. Lett. 33(23), 2865–2867 (2008).
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[CrossRef]

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X. M. Zhang and H. J. Seo, “Luminescence properties of novel Sm3+, Dy3+ doped LaMoBO6 phosphors,” J. Alloy. Comp. 509(5), 2007–2010 (2011).
[CrossRef]

Zhang, Y.

L. Wu, J. C. Sun, Y. Zhang, S. F. Jin, Y. F. Kong, and J. J. Xu, “Structure determination and relative properties of novel chiral orthoborate KMgBO3,” Inorg. Chem. 49(6), 2715–2720 (2010).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, Y. F. Kong, T. Q. Sun, J. J. Xu, and X. L. Chen, “Structure determination of novel orthoborate NaMgBO3: a promising birefringent crystal,” Inorg. Chem. 46(13), 5207–5211 (2007).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, X. L. Chen, Y. F. Kong, T. Q. Sun, J. J. Xu, and Y. P. Xu, “The Na2O-SrO-B2O3 diagram in the B-rich part and the crystal structure of NaSrB5O9,” J. Solid State Chem. 180(4), 1470–1475 (2007).
[CrossRef]

L. Wu, X. L. Chen, Y. Zhang, Y. F. Kong, J. J. Xu, and Y. P. Xu, “Ab Initio structure determination of novel borate NaSrBO3,” J. Solid State Chem. 179(4), 1219–1224 (2006).
[CrossRef]

Zhang, Y. L.

L. H. Jiang, Y. L. Zhang, C. Y. Li, J. Q. Hao, and Q. Su, “Synthesis, photoluminescence, thermoluminescence and dosimetry properties of novel phosphor KSr4(BO3)3:Ce,” J. Alloy. Comp. 482(1-2), 313–316 (2009).
[CrossRef]

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S. Shi, J. Gao, and J. Zhou, “Effects of charge compensation on the luminescence behavior of Eu3+ activated CaWO4 phosphor,” Opt. Mater. 30(10), 1616–1620 (2008).
[CrossRef]

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[CrossRef]

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[CrossRef]

Z. Hao, J. Zhang, X. Zhang, X. Sun, Y. Luo, S. Lu, and X. Wang, “White light emitting diode by using α-Ca2P2O7: Eu2+, Mn2+ phosphor,” Appl. Phys. Lett. 90(26), 261113 (2007).
[CrossRef]

W. J. Yang and T. M. Chen, “Ce3+/Eu2+ codoped Ba2ZnS3: a blue radiation-converting phosphor for white light-emitting diodes,” Appl. Phys. Lett. 90(17), 171908 (2007).
[CrossRef]

N. Hirosaki, R. J. Xie, K. Kimoto, T. Sekiguchi, Y. Yamamoto, T. Suehiro, and M. Mitomo, “Characterization and properties of green-emitting β-SiAlON:Eu2+ powder phosphors for white light-emitting diodes,” Appl. Phys. Lett. 86(21), 211905 (2005).
[CrossRef]

R. J. Xie, N. Hirosaki, N. Kimura, K. Sakuma, and M. Mitomo, “2-phosphor-converted white light-emitting diodes using oxynitride/nitride phosphors,” Appl. Phys. Lett. 90(19), 191101 (2007).
[CrossRef]

R. J. Xie, N. Hirosaki, M. Mitomo, K. Takahashi, and K. Sakuma, “Highly efficient white-light-emitting diodes fabricate with short-wavelength yellow oxynitride phosphors,” Appl. Phys. Lett. 88(10), 101104 (2006).
[CrossRef]

R. J. Xie, N. Hirosaki, M. Mitomo, K. Sakuma, and N. Kimura, “Wavelength-tunable and thermally stable Li-α-sialon:Eu2+ oxynitride phosphors for white light-emitting diodes,” Appl. Phys. Lett. 89(24), 241103 (2006).
[CrossRef]

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[CrossRef]

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[CrossRef]

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[CrossRef]

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L. Wu, J. C. Sun, Y. Zhang, S. F. Jin, Y. F. Kong, and J. J. Xu, “Structure determination and relative properties of novel chiral orthoborate KMgBO3,” Inorg. Chem. 49(6), 2715–2720 (2010).
[CrossRef] [PubMed]

L. Wu, Y. Zhang, Y. F. Kong, T. Q. Sun, J. J. Xu, and X. L. Chen, “Structure determination of novel orthoborate NaMgBO3: a promising birefringent crystal,” Inorg. Chem. 46(13), 5207–5211 (2007).
[CrossRef] [PubMed]

L. Wu, X. L. Chen, H. Li, M. He, Y. P. Xu, and X. Z. Li, “Structure determination and relative properties of novel cubic borates MM’4(BO3)3 (M = Li, M’ = Sr; M = Na, M’ = Sr, Ba),” Inorg. Chem. 44(18), 6409–6414 (2005).
[CrossRef] [PubMed]

L. Wu, X. L. Chen, Y. P. Xu, and Y. P. Sun, “Structure determination and relative properties of novel noncentrosymmetric borates MM’4(BO3)3 (M = Na, M’ = Ca and M = K, M’ = Ca, Sr),” Inorg. Chem. 45(7), 3042–3047 (2006).
[CrossRef] [PubMed]

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L. H. Jiang, Y. L. Zhang, C. Y. Li, J. Q. Hao, and Q. Su, “Synthesis, photoluminescence, thermoluminescence and dosimetry properties of novel phosphor KSr4(BO3)3:Ce,” J. Alloy. Comp. 482(1-2), 313–316 (2009).
[CrossRef]

X. M. Zhang and H. J. Seo, “Luminescence properties of novel Sm3+, Dy3+ doped LaMoBO6 phosphors,” J. Alloy. Comp. 509(5), 2007–2010 (2011).
[CrossRef]

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[CrossRef]

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[CrossRef]

L. Wu, X. L. Chen, Y. Zhang, Y. F. Kong, J. J. Xu, and Y. P. Xu, “Ab Initio structure determination of novel borate NaSrBO3,” J. Solid State Chem. 179(4), 1219–1224 (2006).
[CrossRef]

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Figures (5)

Fig. 1
Fig. 1

Final Rietveld refinement plots of the KSr4(BO3)3:0.03Eu3+. Small circles (o) correspond to experimental values, and the continuous lines, the calculated pattern; vertical bars (|) indicate the position of Bragg peaks. The bottom trace depicts the difference between the experimental and the calculated intensity values. Inset is the structure projection of KSr4(BO3)3.

Fig. 2
Fig. 2

PL/PLE spectra of as–synthesized KSr4(BO3)3:0.03Eu3+ (red, λem = 612 nm; black, λex = 394 nm). The inset is the effect of Eu3+ concentration on the PL intensity.

Fig. 3
Fig. 3

Selected decay curve of KSr4(BO3)3:xEu3+ (x = 0.03) (excited at 394 nm, monitored at 612 nm).

Fig. 4
Fig. 4

(a) Selected X-ray diffraction pattern of KSr4(BO3)3:0.01Eu3+,0.01Li+; (b) volume of KSr4(BO3)3:0.01Eu3+ doped by 0.01M+ (M = Li, Na, K), none in the figure refers to the volume of KSr4(BO3)3:0.01Eu3+. (c) the emission spectra of KSr4(BO3)3:0.01Eu3+, 0.01M+ (M = Li, Na, K) excited at 394 nm. (d) relation between the intensities of peaks at 612nm of the emission spectra in (c) and the compensation charge of alkali ions M+ (M = Li, Na, K).

Fig. 5
Fig. 5

(color online) CIE chromaticity diagram for KSr4(BO3)3:Eu3+ excited at 394 nm.

Tables (4)

Tables Icon

Table 1 Occupancy and Lattice Parameters of Eu3+ Occupying Different Sites for KSr4(BO3)3:0.03Eu3+ Refined by Rietveld Method, in which A–G Represents Eu3+ Occupy Sr(1) Site, Sr(2) Site, Sr(3) Site, Sr(1) and Sr(2) Site, Sr(1) and Sr(3) Sites, Sr(2) and Sr(3) Sites, and Sr(1), Sr(2) and Sr(3) Sites, Respectively

Tables Icon

Table 2 Fractional Atomic Coordinates and Equivalent Isotropic Displacement Parameters (Å2) for KSr4(BO3)3:0.03Eu3+

Tables Icon

Table 3 Interatomic Distances (Å) and Angles (deg) for KSr4(BO3)3:0.03Eu3+

Tables Icon

Table 4 Chromaticity coordinates of KSr4(BO3)3:Eu3+ and KSr4(BO3)3:0.01Eu3+,0.01M+ (M = Li, Na, and K)

Equations (2)

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R c 2 [ 3V 4π x c Z ] 1 3
I= I 0 exp(t/τ )

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