Concentration Dependence of Luminescence under Different Excitation Wavelength in Y2O2S:Sm3+ Phosphor
LEI Bing-fu1, 2, LIU Ying-liang2, TANG Gong-ben1, YE Ze-ren1, SHI Chun-shan1*
1. Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China 2. Department of Chemistry, Ji'nan University，Guangzhou 510632, China
Abstract：The concentration dependence of luminescence under different excitations in Y2O2S:Sm3+ phosphor has been studied. The optimum activator concentration was found to be a function of the number of excited activator ions as well as the excitation wavelength. The concentration dependence curve of Y2O2S:Sm3+ phosphor under 413 nm excitation was different from the curve obtained with 263 nm excitation. For excitation radiation having longer wavelength (413 nm), the concentration quenching of Y2O2S:Sm3+ phosphor occurred at about 2%, which is ten times as the result with shorter wavelength (263 nm) excitation (-0.2%). Fitting the concentration dependence curve and the result shows that the cross-relaxation caused by the dipole-quadrupole interaction of neighboring Sm3+ ions results in the concentration quenching.
雷炳富1, 2，刘应亮2，唐功本1，叶泽人1，石春山1* . Y2O2S:Sm3+发光材料在不同激发波长的浓度特征 [J]. 光谱学与光谱分析, 2004, 24(11): 1302-1305.
LEI Bing-fu1, 2, LIU Ying-liang2, TANG Gong-ben1, YE Ze-ren1, SHI Chun-shan1* . Concentration Dependence of Luminescence under Different Excitation Wavelength in Y2O2S:Sm3+ Phosphor . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1302-1305.
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