Effect of N+(N=Li, Na, K) on the Spectra of M3(M=Ca, Sr, Ba)Y2(BO3)4∶Eu3+ Luminescent Phosphor
LI Pan-lai1,WANG Zhi-jun1*,GAO Hui-ying2,YANG Zhi-ping1
1. College of Physics Science & Technology, Hebei University, Baoding 071002, China 2. North China Electric Power University Science & Technology College, Baoding 071051, China
Abstract：The M3(M=Ca, Sr, Ba)Y2(BO3)4∶Eu3+ red phosphor was synthesized by firing twice at 800 and 1 050 ℃ each for 4 h and 4 h in air, respectively. Y2O3(99.9%), Eu2O3(99.9%), H3BO3(99.9%), CaCO3(99.9%), SrCO3(99.9%), BaCO3(99.9%), Li2CO3(99.9%), Na2CO3(99.9%) and K2CO3(99.9%) were used as starting materials, and the doping Eu3+ concentration was 3 mol%. The excitation spectrum was measured by a SHIMADZU RF-540 ultraviolet spectrophotometer. The emission spectrum was measured by a SPEX1404 spectrophotometer. All the luminescence characteristics of the phosphors were investigated at room temperature. The emission spectrum of M3(M=Ca, Sr, Ba)Y2(BO3)4∶Eu3+ phosphor exhibited a 613 nm red emission corresponding to the electric dipole 5D0-7F2 transition of Eu3+ under 365 nm excitation. The excitation spectrum for 613 nm indicates that the phosphor can be effectively excited by ultraviolet (UV) (254, 365 and 400 nm) and blue (470 nm) light. The effect of Li+,Na+ and K+ on the excitation and emission spectra of M3(M=Ca, Sr, Ba)Y2(BO3)4∶Eu3+ phosphor was studied. The results show that the location of the excitation and emission spectrum of M3(M=Ca, Sr, Ba)Y2(BO3)4∶Eu3+ phosphor was not influenced by Li+,Na+ and K+. However, the excitation and emission spectrum intensities were greatly influenced by Li+,Na+ and K+,and the emission peak intensities were all enhanced. Under the condition of the same Li+,Na+ and K+ concentration, the emission peak intensities of M3(M=Ca, Sr, Ba)Y2(BO3)4∶Eu3+ phosphor were compared, and the result shows that the accretion effect of doping Li+ is the best. The effect of Li+ concentration on the emission peak intensity of Sr3Y2(BO3)4∶Eu3+ phosphor was studied. The results show that the emission peak intensity firstly increased with the increasing Li+ concentration, then decreased, and reached the maximum value at 5 mol% Li+,and the maximum value is about twice as much as the Li-undoped one.
[1] 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. [2] ZHAO Su-ling, HOU Yan-bing, XU Zheng, et al(赵谡玲, 侯延冰, 徐 征, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(4): 597. [3] 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. [4] SHI Yan-ning, HE Da-wei, LIANG Zhong-yi(史艳宁, 何大伟, 梁忠益). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(5): 809. [5] 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. [6] CHANG Jian-jun, HUANG Shi-hua, PENG Hong-shang, et al(常建军, 黄世华, 彭洪尚, 等). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 2006, 26(2): 231. [7] Kim J S, Jeon P E, Choi J C, et al. Applied Physics Letters, 2004, 84(15): 2931. [8] Lakshminarasimhan N, Varadaraju U V. J. Electrochemical Society, 2005, 152(9): H152. [9] Park K P, Lim M A, Choi K J, et al. J. Materials Science, 2005, 40: 2069. [10] Park J K, Choi K J, Kim K N, et al. Applied Physics Letters, 2005, 87: 031108-1. [11] Kim J S, Lim K T, Jeong Y S, et al. J. Solid State Communication, 2005, 135: 21. [12] Park J K, Choi K J, Park S H, et al. J. Electrochemical Society, 2005, 152(8): H121. [13] GUO Feng-yu, HUANG Xiao-hua, YAO Guang-qing(郭凤瑜, 黄晓华, 姚光庆). Chinese Journal of Inorganic Chemistry(无机化学学报) 1995, 11(2): 109. [14] LI Qi-hua, LIU Li-min, LEI Chun-hua, et al(李其华, 刘利民, 雷春华, 等). Hunan Nonferrous Metals(湖南有色金属), 2004, 20(1): 29. [15] PENG Yi-an, GUO Feng-yu(彭夷安, 郭凤瑜). Spectroscopy and Spectral Analysis(光谱学与光谱分析), 1994, 14(6): 15. [16] Yang C H, Pan Y X, Zhang Q Y. Materials Science and Engineering B, 2007, 137: 195. [17] Sun L D, Qian C, Liao C S, et al. Solid State Communications, 2001, 119: 393. [18] Tian L H, Mho S I. Solid State Communications, 2003, 125: 647. [19] Mckittrick J, Shea L E, Bacalski C F, et al. Displays, 1999, 19: 169. [20] Hyeon K A, Byeon S H, Park J C, et al. Solid State Communication, 2000, 115: 99.
