Abstract

Cyan-emitting (Ba,Ca)Si7N10:Eu2+ was synthesized using a high-temperature graphite furnace. Crystallographic data for BaSi7N10:0.1Eu2+ were obtained by Rietveld refinement and discussed compared with un-doped BaSi7N10. The excitation spectra peaked at 368 nm and decay times were apparently different from those of earlier papers, and these differences were explained by the structural analyses. The substitution of Ca2+ ions for Ba2+ ions increased the emission intensity by approximately 130%, as this resulted in local lattice modification. The findings indicate that (Ba,Ca)Si7N10:Eu2+ phosphors are highly stable and well suited for use in white LEDs pumped by near ultraviolet sources.

© 2014 Optical Society of America

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  1. H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
    [CrossRef]
  2. Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
    [CrossRef]
  3. B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
    [CrossRef]
  4. J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
    [CrossRef]
  5. V. D. Luong, W. Zhang, and H.-R. Lee, “Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment,” J. Alloy. Comp.509(27), 7525–7528 (2011).
    [CrossRef]
  6. G. Kirakosyan and D. Y. Jeon, “Low-temperature synthesis Sr2Si5N8:Eu2+ red-emitting phosphor by modified solid-state metathesis approach and its photoluminescent characteristics,” J. Electrochem. Soc.159(2), J29–J33 (2012).
    [CrossRef]
  7. J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
    [CrossRef]
  8. X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
    [CrossRef]
  9. Y. W. Jung, B. Lee, S. P. Singh, and K. S. Sohn, “Particle-swarm-optimization-assisted rate equation modeling of the two-peak emission behavior of non-stoichiometric CaAl(x)Si(7-3x)/4N3:Eu2+ phosphors,” Opt. Express18(17), 17805–17818 (2010).
    [CrossRef] [PubMed]
  10. 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]
  11. V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
    [CrossRef]
  12. J. Park, S. J. Lee, and Y. J. Kim, “Evolution of luminescence of Sr2-y-zCazSi(O1-xNx)4:yEu2+ with N3-, Eu2+, and Ca2+ substitutions,” J. Cryst. Growth Des.13(12), 5204–5210 (2013).
    [CrossRef]
  13. S. J. Lee, S.-H. Hong, and Y. J. Kim, “Synthesis and luminescent properties of (Sr,M)2Si(O1-xNx)4:Eu2+(M: Mg2+, Ca2+, Ba2+),” J. Electrochem. Soc.159(5), J163–J167 (2012).
    [CrossRef]
  14. Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
    [CrossRef]
  15. H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
    [CrossRef]
  16. J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
    [CrossRef]
  17. G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
    [CrossRef]
  18. C. M. Fang, H. T. Hintzen, and G. de With, “First-principles electronic structure calculations of BaSi7N10 with both corner- and edge-sharing SiN4 tetrahedra,” J. Alloy. Comp.336(1-2), 1–4 (2002).
    [CrossRef]
  19. H. Huppertz and W. Schnick, “Edge-sharing SiN4 tetrahedra in the highly condensed nitridosilicate BaSi7N10,” Chemistry3(2), 249–252 (1997).
    [CrossRef] [PubMed]
  20. G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
    [CrossRef]

2014 (1)

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

2013 (3)

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

J. Park, S. J. Lee, and Y. J. Kim, “Evolution of luminescence of Sr2-y-zCazSi(O1-xNx)4:yEu2+ with N3-, Eu2+, and Ca2+ substitutions,” J. Cryst. Growth Des.13(12), 5204–5210 (2013).
[CrossRef]

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

2012 (2)

G. Kirakosyan and D. Y. Jeon, “Low-temperature synthesis Sr2Si5N8:Eu2+ red-emitting phosphor by modified solid-state metathesis approach and its photoluminescent characteristics,” J. Electrochem. Soc.159(2), J29–J33 (2012).
[CrossRef]

S. J. Lee, S.-H. Hong, and Y. J. Kim, “Synthesis and luminescent properties of (Sr,M)2Si(O1-xNx)4:Eu2+(M: Mg2+, Ca2+, Ba2+),” J. Electrochem. Soc.159(5), J163–J167 (2012).
[CrossRef]

2011 (1)

V. D. Luong, W. Zhang, and H.-R. Lee, “Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment,” J. Alloy. Comp.509(27), 7525–7528 (2011).
[CrossRef]

2010 (3)

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[CrossRef]

Y. W. Jung, B. Lee, S. P. Singh, and K. S. Sohn, “Particle-swarm-optimization-assisted rate equation modeling of the two-peak emission behavior of non-stoichiometric CaAl(x)Si(7-3x)/4N3:Eu2+ phosphors,” Opt. Express18(17), 17805–17818 (2010).
[CrossRef] [PubMed]

2009 (3)

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

2007 (1)

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

2006 (1)

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

2005 (2)

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]

G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
[CrossRef]

2002 (1)

C. M. Fang, H. T. Hintzen, and G. de With, “First-principles electronic structure calculations of BaSi7N10 with both corner- and edge-sharing SiN4 tetrahedra,” J. Alloy. Comp.336(1-2), 1–4 (2002).
[CrossRef]

2000 (1)

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

1997 (1)

H. Huppertz and W. Schnick, “Edge-sharing SiN4 tetrahedra in the highly condensed nitridosilicate BaSi7N10,” Chemistry3(2), 249–252 (1997).
[CrossRef] [PubMed]

Anoop, G.

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

Bachmann, V.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

Botty, G.

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

de With, G.

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

C. M. Fang, H. T. Hintzen, and G. de With, “First-principles electronic structure calculations of BaSi7N10 with both corner- and edge-sharing SiN4 tetrahedra,” J. Alloy. Comp.336(1-2), 1–4 (2002).
[CrossRef]

Delsing, A. C. A.

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

DiSalvo, F. J.

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

Dong, H.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

Esmaeilzadeh, S.

G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
[CrossRef]

Fang, C. M.

C. M. Fang, H. T. Hintzen, and G. de With, “First-principles electronic structure calculations of BaSi7N10 with both corner- and edge-sharing SiN4 tetrahedra,” J. Alloy. Comp.336(1-2), 1–4 (2002).
[CrossRef]

Hanzawa, H.

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Hintzen, H. T.

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

C. M. Fang, H. T. Hintzen, and G. de With, “First-principles electronic structure calculations of BaSi7N10 with both corner- and edge-sharing SiN4 tetrahedra,” J. Alloy. Comp.336(1-2), 1–4 (2002).
[CrossRef]

Hirosaki, N.

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[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]

Hong, S.-H.

S. J. Lee, S.-H. Hong, and Y. J. Kim, “Synthesis and luminescent properties of (Sr,M)2Si(O1-xNx)4:Eu2+(M: Mg2+, Ca2+, Ba2+),” J. Electrochem. Soc.159(5), J163–J167 (2012).
[CrossRef]

Höppe, H. A.

G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
[CrossRef]

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

Horikawa, T.

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Huppertz, H.

H. Huppertz and W. Schnick, “Edge-sharing SiN4 tetrahedra in the highly condensed nitridosilicate BaSi7N10,” Chemistry3(2), 249–252 (1997).
[CrossRef] [PubMed]

Jeon, D. Y.

G. Kirakosyan and D. Y. Jeon, “Low-temperature synthesis Sr2Si5N8:Eu2+ red-emitting phosphor by modified solid-state metathesis approach and its photoluminescent characteristics,” J. Electrochem. Soc.159(2), J29–J33 (2012).
[CrossRef]

Jung, Y. W.

Kijima, N.

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Kim, Y. J.

J. Park, S. J. Lee, and Y. J. Kim, “Evolution of luminescence of Sr2-y-zCazSi(O1-xNx)4:yEu2+ with N3-, Eu2+, and Ca2+ substitutions,” J. Cryst. Growth Des.13(12), 5204–5210 (2013).
[CrossRef]

S. J. Lee, S.-H. Hong, and Y. J. Kim, “Synthesis and luminescent properties of (Sr,M)2Si(O1-xNx)4:Eu2+(M: Mg2+, Ca2+, Ba2+),” J. Electrochem. Soc.159(5), J163–J167 (2012).
[CrossRef]

Kimoto, K.

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]

Kirakosyan, G.

G. Kirakosyan and D. Y. Jeon, “Low-temperature synthesis Sr2Si5N8:Eu2+ red-emitting phosphor by modified solid-state metathesis approach and its photoluminescent characteristics,” J. Electrochem. Soc.159(2), J29–J33 (2012).
[CrossRef]

Lee, B.

Lee, D. W.

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

Lee, H.-R.

V. D. Luong, W. Zhang, and H.-R. Lee, “Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment,” J. Alloy. Comp.509(27), 7525–7528 (2011).
[CrossRef]

Lee, S. J.

J. Park, S. J. Lee, and Y. J. Kim, “Evolution of luminescence of Sr2-y-zCazSi(O1-xNx)4:yEu2+ with N3-, Eu2+, and Ca2+ substitutions,” J. Cryst. Growth Des.13(12), 5204–5210 (2013).
[CrossRef]

S. J. Lee, S.-H. Hong, and Y. J. Kim, “Synthesis and luminescent properties of (Sr,M)2Si(O1-xNx)4:Eu2+(M: Mg2+, Ca2+, Ba2+),” J. Electrochem. Soc.159(5), J163–J167 (2012).
[CrossRef]

Lei, B.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

Li, H. L.

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[CrossRef]

Li, J.

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

Li, Y. Q.

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

Liu, X.

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

Liu, Y.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

Luong, V. D.

V. D. Luong, W. Zhang, and H.-R. Lee, “Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment,” J. Alloy. Comp.509(27), 7525–7528 (2011).
[CrossRef]

Lutz, H.

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

Machida, K.

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Meijerink, A.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

Meng, H.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

Metslaar, R.

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

Mitomo, M.

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]

Morys, P.

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

Oeckler, O.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

Ok, K. M.

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

Park, J.

J. Park, S. J. Lee, and Y. J. Kim, “Evolution of luminescence of Sr2-y-zCazSi(O1-xNx)4:yEu2+ with N3-, Eu2+, and Ca2+ substitutions,” J. Cryst. Growth Des.13(12), 5204–5210 (2013).
[CrossRef]

Piao, X.

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Pilet, G.

G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
[CrossRef]

Qin, J.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

Ronda, C.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

Schnick, W.

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
[CrossRef]

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

H. Huppertz and W. Schnick, “Edge-sharing SiN4 tetrahedra in the highly condensed nitridosilicate BaSi7N10,” Chemistry3(2), 249–252 (1997).
[CrossRef] [PubMed]

Seilmeier, A.

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

Sekiguchi, T.

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]

Setoyama, T.

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

Shimomura, Y.

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Singh, S. P.

Sohn, K. S.

Suehiro, T.

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]

Suh, D. W.

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

Sun, Z.

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[CrossRef]

van Krevel, J. W. H.

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

van Steen, J. E. J.

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

Wada, H.

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

Watanabe, T.

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

Wu, S. L.

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

Xiao, Y.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

Xie, R. J.

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[CrossRef]

Xie, R.-J.

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]

Yamamoto, H.

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

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]

Yoo, J. S.

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

Yoshimura, M.

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

Zhang, H.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

Zhang, W.

V. D. Luong, W. Zhang, and H.-R. Lee, “Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment,” J. Alloy. Comp.509(27), 7525–7528 (2011).
[CrossRef]

Zheng, M.

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

Zhou, G. H.

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[CrossRef]

Appl. Phys. Lett. (1)

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]

Chem. Mater. (2)

V. Bachmann, C. Ronda, O. Oeckler, W. Schnick, and A. Meijerink, “Color point tuning for (Sr,Ca,Ba)Si2O2N2:Eu2+ for white light LEDs,” Chem. Mater.21(2), 316–325 (2009).
[CrossRef]

X. Piao, K. Machida, T. Horikawa, H. Hanzawa, Y. Shimomura, and N. Kijima, “Preparation of CaAlSiN3:Eu2+ phosphors by the self-propagating high-temperature synthesis and their luminescent properties,” Chem. Mater.19(18), 4592–4599 (2007).
[CrossRef]

Chemistry (1)

H. Huppertz and W. Schnick, “Edge-sharing SiN4 tetrahedra in the highly condensed nitridosilicate BaSi7N10,” Chemistry3(2), 249–252 (1997).
[CrossRef] [PubMed]

J. Alloy. Comp. (4)

C. M. Fang, H. T. Hintzen, and G. de With, “First-principles electronic structure calculations of BaSi7N10 with both corner- and edge-sharing SiN4 tetrahedra,” J. Alloy. Comp.336(1-2), 1–4 (2002).
[CrossRef]

V. D. Luong, W. Zhang, and H.-R. Lee, “Preparation of Sr2Si5N8:Eu2+ for white light-emitting diodes by multi-step heat treatment,” J. Alloy. Comp.509(27), 7525–7528 (2011).
[CrossRef]

Y. Q. Li, J. E. J. van Steen, J. W. H. van Krevel, G. Botty, A. C. A. Delsing, F. J. DiSalvo, G. de With, and H. T. Hintzen, “Luminescence properties of red-emitting M2Si5N8:Eu2+ (M = Ca, Sr, Ba) LED conversion phosphors,” J. Alloy. Comp.417(1-2), 273–279 (2006).
[CrossRef]

Y. Q. Li, A. C. A. Delsing, R. Metslaar, G. de With, and H. T. Hintzen, “Photoluminescence properties of rare-earth activated BaSi7N10,” J. Alloy. Comp.487(1-2), 28–33 (2009).
[CrossRef]

J. Am. Ceram. Soc. (2)

J. Li, B. Lei, J. Qin, Y. Liu, and X. Liu, “Temperature-dependent emission spectra of Ca2Si5N8:Eu2+, Tm3+ phosphor and its afterglow properties,” J. Am. Ceram. Soc.96(3), 873–878 (2013).
[CrossRef]

J. Li, T. Watanabe, H. Wada, T. Setoyama, and M. Yoshimura, “Synthesis of Eu-doped CaAlSiN3 from ammonometallates: effects of sodium content and pressure,” J. Am. Ceram. Soc.92(2), 344–349 (2009).
[CrossRef]

J. Cryst. Growth Des. (1)

J. Park, S. J. Lee, and Y. J. Kim, “Evolution of luminescence of Sr2-y-zCazSi(O1-xNx)4:yEu2+ with N3-, Eu2+, and Ca2+ substitutions,” J. Cryst. Growth Des.13(12), 5204–5210 (2013).
[CrossRef]

J. Electrochem. Soc. (4)

S. J. Lee, S.-H. Hong, and Y. J. Kim, “Synthesis and luminescent properties of (Sr,M)2Si(O1-xNx)4:Eu2+(M: Mg2+, Ca2+, Ba2+),” J. Electrochem. Soc.159(5), J163–J167 (2012).
[CrossRef]

H. L. Li, R. J. Xie, G. H. Zhou, N. Hirosaki, and Z. Sun, “A cyan-emitting BaSi7N10 : Eu2 + phosphor prepared by gas reduction and nitridation for UV-Pumping White LEDs,” J. Electrochem. Soc.157(7), J251–J255 (2010).
[CrossRef]

B. Lei, K. Machida, T. Horikawa, H. Hanzawa, N. Kijima, Y. Shimomura, and H. Yamamoto, “Reddish-orange long-lasting phosphorescence of Ca2Si5N8:Eu2+,Tm3+ phosphor,” J. Electrochem. Soc.157(6), J196–J201 (2010).
[CrossRef]

G. Kirakosyan and D. Y. Jeon, “Low-temperature synthesis Sr2Si5N8:Eu2+ red-emitting phosphor by modified solid-state metathesis approach and its photoluminescent characteristics,” J. Electrochem. Soc.159(2), J29–J33 (2012).
[CrossRef]

J. Lumin. (1)

J. Qin, H. Zhang, B. Lei, H. Dong, Y. Liu, H. Meng, M. Zheng, and Y. Xiao, “Preparation and afterglow properties of highly condensed nitridosilicate BaSi7N10:Eu2+ phosphor,” J. Lumin.152, 230–233 (2014).
[CrossRef]

J. Mater. Chem. C (1)

G. Anoop, D. W. Lee, D. W. Suh, S. L. Wu, K. M. Ok, and J. S. Yoo, “Solid-state synthesis, structure, second-harmonic generation, and luminescent properties of noncentrosymmetric BaSi7N10:Eu2+ phosphors,” J. Mater. Chem. C1(31), 4705–4712 (2013).
[CrossRef]

J. Phys. Chem. Solids (1)

H. A. Höppe, H. Lutz, P. Morys, W. Schnick, and A. Seilmeier, “Luminescence in Eu2+-doped Ba2Si5N8: fuorescence, thermoluminescence, and upconversion,” J. Phys. Chem. Solids61(12), 2001–2006 (2000).
[CrossRef]

Opt. Express (1)

Solid State Sci. (1)

G. Pilet, H. A. Höppe, W. Schnick, and S. Esmaeilzadeh, “Crystal structure and mechanical properties of SrSi7N10,” Solid State Sci.7(4), 391–396 (2005).
[CrossRef]

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Figures (9)

Fig. 1
Fig. 1

(a) XRD patterns of the samples prepared with (x-0.1)BaCO3, (b) experimental (red dots) and calculated (blue solid line) XRD profiles of Rietveld refinement for BaSi7N10:0.1Eu2+ powders corresponding to x = 0.8, and (c) a difference between the experimental and calculated data. Blue bars represent Bragg reflections.

Fig. 2
Fig. 2

Variation in the Ba/Si atomic ratios (RBa/Si) of the samples prepared with (x-0.1)BaCO3.

Fig. 3
Fig. 3

(a) PLE and (b) emission spectra of the samples prepared with (x-0.1)BaCO3.

Fig. 4
Fig. 4

Variation in the IR values of the samples prepared with (x-0.1)BaCO3.

Fig. 5
Fig. 5

(a) Thermal quenching and (b) spectral variation of BaSi7N10:0.1Eu2+ (x = 0.8) powders.

Fig. 6
Fig. 6

Variation in (a) the emission intensity and (b) DPWs of (Ba,Ca)Si7N10:0.1Eu2+ powders with Ca (y). (Inset: CIE chromaticity coordinates).

Fig. 7
Fig. 7

Crystal parameters of the (Ba,Ca)Si7N10:0.1Eu2+ powders prepared with different amounts of Ca (y). (a) Lattice constants a and b, (b) lattice constant c, (c) axial angle β, and (d) unit cell volume.

Fig. 8
Fig. 8

Decay curve of (Ba,Ca)Si7N10:0.1Eu2+ (x = 0.8, y = 0.1).

Fig. 9
Fig. 9

PL emission spectra of the (Ba,Ca)Si7N10:zEu2+ powders (x = 0.8, y = 0.1) prepared with different Eu2+ concentrations (z).

Tables (2)

Tables Icon

Table 1 Crystallographic data for BaSi7N10 and BaSi7N10:0.1Eu2+ (x = 0.8).

Tables Icon

Table 2 Interatomic distances (Å) of Eu-N for Ba0.9Eu0.1Si7N10.

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