| 光谱学与光谱分析 |
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| 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 |
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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.
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Received: 2003-04-18
Accepted: 2003-09-09
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Corresponding Authors:
SHI Chun-shan
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| Cite this article: |
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LEI Bing-fu,LIU Ying-liang,TANG Gong-ben, et al. Concentration Dependence of Luminescence under Different Excitation Wavelength in Y2O2S:Sm3+ Phosphor [J]. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2004, 24(11): 1302-1305.
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| URL: |
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http://www.gpxygpfx.com/EN/Y2004/V24/I11/1302 |
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