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A novel Ca3Si3O9:Dy3+ phosphor for white LED was prepared by sol-gel method. The structure and luminescent properties of Ca3Si3O9:Dy3+ phosphors with different concentration of Dy3+ and charge compensator Li+ were characterized by X-ray diffraction (XRD) and photoluminescence (PL) spectra. Results show that the emission spectrum consists of two main band peaks locatied at 483 nm and 577 nm, while the peaks of excitation spectrum are located in the rang of 290–480 nm. Both of luminescent intensity and the ratio of yellow to blue emission (Y/B) increase first and then decrease with increasing Dy3+ concentration; and the luminescent intensity reaches a maximum when Dy3+ concentration is of 1 mol%. The luminescent intensity of Ca3Si3O9:Dy3+can be enhanced by Li+, and the blue emission increases greatly when Li+ concentration is within the range of 2 to 4 mol%.
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Keywords:
- white LED /
- sol-gel method /
- Ca3Si3O9：Dy3+ /
- luminescent properties
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[8] Wang Z J, Li P L, Wang G, Yang Z P, Guo Q L 2008 Acta Phys. Sin. 57 4575 (in Chinese) [王志军, 李盼来, 王刚, 杨志平, 郭庆林 2008 物理学报 57 4575]
[9] Li P L, Wang Y, Guo Q L 2011 Chin. Sci. Bull. 56 488 (in Chinese) [李盼来, 王颖, 郭庆林 2011 科学通报 56 488]
[10] Yu Y, Liu Z J, Chen Q Q, Dai N L, Li J Y, Yang L Y 2013 Acta Phys. Sin. 62 017804 (in Chinese) [余阳, 刘自军, 陈乔乔, 戴能利, 李进延, 杨旅云 2013 物理学报 62 017804]
[11] Yang H, Zhang L, Han P D, Zhang Q T 2012 J. Nanjing Univ. Tec. 34 16 (in Chinese) [杨浩, 张乐, 韩鹏德, 张其土 2012 南京工业大学学报 34 16]
[12] Yang F, Liang Y J, Liu M Y, Li X J, Wang N, Xia Z G 2012 Ceram. Int. 38 6197
[13] Liu H L, Hao Y Y, Wang H, Zhao J F, Huang P, Xu B S 2011 J. Lumin. 131 2422
[14] Zhai Y Q, You Z J, Wang X, Xing R S, L J P 2011 J. Chin. Ceram. Soc. 39 1887 (in Chinese) [翟永清, 游志江, 王欣, 邢瑞思, 吕佳佩 2011 硅酸盐学报 39 1887]
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[1] Li P L, Yang Z P, Wang Z J, Guo Q L 2008 Chin. Phys. B 17 1135
[2] Nishiura S, Tanabe S, Fujioka K, Fujimoto Y 2011 Opt. Mater. 33 688
[3] Zhang X H, Lu Z M, Meng F B, Lu F, Hu L, Xu X W, Tang C C 2012 Mater. Lett. 66 16
[4] Lei F, Yan B 2008 J. Solid State Chem. 181 855
[5] Luo Y Y, Jo D S, Senthil K, Tezuka S, Kakihana M, Toda K, Masaki T, Yoon D H 2012 J. Solid State Chem. 189 68
[6] Zhang Z H, Feng J G, Huang Z L 2010 Particuology 8 473
[7] Zhang X H, Lu Z M, Meng F B, Hu L, Xu X W, Lin J, Tang C C 2012 Mater. Lett. 79 292
[8] Wang Z J, Li P L, Wang G, Yang Z P, Guo Q L 2008 Acta Phys. Sin. 57 4575 (in Chinese) [王志军, 李盼来, 王刚, 杨志平, 郭庆林 2008 物理学报 57 4575]
[9] Li P L, Wang Y, Guo Q L 2011 Chin. Sci. Bull. 56 488 (in Chinese) [李盼来, 王颖, 郭庆林 2011 科学通报 56 488]
[10] Yu Y, Liu Z J, Chen Q Q, Dai N L, Li J Y, Yang L Y 2013 Acta Phys. Sin. 62 017804 (in Chinese) [余阳, 刘自军, 陈乔乔, 戴能利, 李进延, 杨旅云 2013 物理学报 62 017804]
[11] Yang H, Zhang L, Han P D, Zhang Q T 2012 J. Nanjing Univ. Tec. 34 16 (in Chinese) [杨浩, 张乐, 韩鹏德, 张其土 2012 南京工业大学学报 34 16]
[12] Yang F, Liang Y J, Liu M Y, Li X J, Wang N, Xia Z G 2012 Ceram. Int. 38 6197
[13] Liu H L, Hao Y Y, Wang H, Zhao J F, Huang P, Xu B S 2011 J. Lumin. 131 2422
[14] Zhai Y Q, You Z J, Wang X, Xing R S, L J P 2011 J. Chin. Ceram. Soc. 39 1887 (in Chinese) [翟永清, 游志江, 王欣, 邢瑞思, 吕佳佩 2011 硅酸盐学报 39 1887]
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