Abstract:The Ca3SiO5∶Eu2+ phosphor was synthesized by the sol-gel reaction method. The emission spectrum was measured by a SPEX1404 spectrophotometer, and the excitation spectrum was measured by a SHIMADZU RF-540 ultraviolet spectrophotometer. All the characterization of the phosphors was conducted at room temperature. The results show that the emission spectrum of Ca3SiO5∶Eu2+ phosphor exhibits one asymmetry band centred at 505 nm under the 365 nm excitation, and the excitation spectrum for 505 nm indicates two bands centred at 374 and 397 nm, respectively. The above results indicate that the phosphor used for w-LEDs can be excited by UV light, and emit green light. The effect of synthesis condition, such as synthesis temperature, synthesis time and Eu2+ concentration, on the emission spectrum of Ca3SiO5∶Eu2+ phosphor was investigated. The results show that the emission peak intensity of Ca3SiO5∶Eu2+ phosphor firstly increases, then decreases with the increase in synthesis temperature or synthesis time or Eu2+ concentration, and reaches the maximum value at 1 100 ℃, for 4 h and 0.5 mol% Eu2+.
李盼来,王志军*,杨志平,熊志军. Ca3SiO5∶Eu2+材料光谱特性研究[J]. 光谱学与光谱分析, 2009, 29(01): 70-72.
LI Pan-lai, WANG Zhi-jun*,YANG Zhi-ping, XIONG Zhi-jun. Study of Spectra Characteristics of Ca3SiO5∶Eu2+ Phosphor. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2009, 29(01): 70-72.
[1] Sun L D, Qian C, Liao C S, et al. Solid State Communication, 2001, 119: 393. [2] Tian L H, Mho S I. Solid State Communication, 2003, 125: 647. [3] LIU Hong-li, HE Da-wei, SHEN Fang(刘红利, 何大伟, 沈 芳). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(10): 1790. [4] Kyung N K, Joung K P, Kyoung J C. Solid-State Lett., 2006, 9(8): G262. [5] SHEN Fang, HE Da-wei, LIU Hong-li, et al(沈 芳, 何大伟, 刘红利, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(7): 1195. [6] Hu Y S, Zhuang W D, Ye H Q, et al. J. Alloys Compounds, 2005, 390: 226. [7] WANG Xin-zi, WANG Yong-sheng, SUN Li, et al(王欣姿, 王永生, 孙 力, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(3): 399. [8] Park J K, Kim C H, Park S H, et al. Applied Physics Letters, 2004, 84(10): 1647. [9] Kim J S, Jeon P E, Choi J C, et al. Applied Physics Letters, 2004, 84(15): 2931. [10] Lakshminarasimhan N, Varadaraju U V. J. Electrochemical Society, 2005, 152(9): H152. [11] Park K P, Lim M A, Choi K J, et al. J. Materials Science, 2005, 40: 2069. [12] Park J K, Choi K J, Kim K N, et al. Applied Physics Letters, 2005, 87: 031108-1. [13] Kim J S, Lim K T, Jeong Y S, et al. Solid State Communication, 2005, 135: 21. [14] Park J K, Choi K J, Park S H, et al. J. Electrochemical Society, 2005, 152(8): H121. [15] Mckittrick J, Shea L E, Bacalski C F, et al. Displays, 1999, 19: 169. [16] Hyeon K A, Byeon S H, Park J C, et al. Solid State Communication, 2000, 115∶ 99. [17] Kim J S, Jeon P E, Choi J C, et al. Applied Physics Letters, 2004, 84(15): 2931. [18] Lim M A, Park J K, Kim C H, et al. Journal of Materials Science Letters, 2003, 22: 1351. [19] Kottaisamy M, Jagannathan R. J. Electrochem. Soc., 1995, 142: 3205. [20] YANG Zhi-ping, GUO Zhi, ZHU, Sheng-chao, et al(杨志平, 郭 智, 朱胜超, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2004, 24(12): 1506.