Analysis of surface effect on luminescent properties of Eu in YVO4 nanocrystals |
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| Authors: | Hongshang Peng Shihua Huang Lingdong Sun Chunhua Yan |
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| Institution: | 1. Key Laboratory of Luminescence and Optical Information, Ministry of Education, Beijing Jiaotong University, Beijing 100044, China;2. State Key Laboratory of Rare Earth Materials Chemistry and Applications, Peking University, Beijing 100871, China |
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| Abstract: | In this Letter, 7F2 crystal field (CF) levels of surface Eu3+ in YVO4 nanocrystals are calculated employing a refined electrostatic point charge model, where surface states are simulated by point charges. Based on the theoretical 7F2 CF levels, emission spectra of YVO4: Eu3+ nanocrystals are assigned to Eu3+ under different local environments. and relaxation of selection rules by surface effect is discussed. |
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| Keywords: | 78 55 -m 02 20 -a 03 65 -w |
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