Luminescent properties and energy transfer in the green phosphors LaBSiO5:Tb3+,Ce3+ |
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| Authors: | Zhengliang Wang Ping Cheng Pei He Yong Liu Yayun Zhou Qiang Zhou |
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| Affiliation: | 1. Engineering Research Center of Biopolymer Functional Materials of Yunnan, Key Laboratory of Comprehensive Utilization of Mineral Resources in Ethnic Districts, School of Chemistry and Biotechnology, Yunnan Minzu University Kunming, Yunnan, People's Republic of China;2. Yunnan Academy of Tobacco Science, Kunming, People's Republic of China |
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| Abstract: | LaBSiO5 phosphors doped with Ce3+ and Tb3+ were synthesized using the conventional solid‐state method at 1100 °C. The phase purity and luminescent properties of these phosphors are investigated. LaBSiO5:Tb3+ phosphors show intense green emission, and LaBSiO5 phosphors doped with Ce3+ show blue–violet emission under UV light excitation. LaBSiO5 phosphors co‐doped with Ce3+ and Tb3+ exhibit blue–violet and green emission under excitation by UV light. The blue–violet emission is due to the 5d–4f transition of Ce3+ and the green emission is ascribed to the 5D4 → 7 F5 transition of Tb3+. The spectral overlap between the excitation band of Tb3+ and the emission band of Ce3+ supports the occurrence of energy transfer from Ce3+ to Tb3+, and the energy transfer process was investigated. Copyright © 2014 John Wiley & Sons, Ltd. |
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| Keywords: | phosphor luminescent properties energy transfer |
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