Sol‐gel synthesis and luminescent properties of red‐emitting Y(P,V)O4:Eu3+ phosphors |
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| Authors: | Xinguo Zhang Fangxiang Zhou Pei He Min Zhang Menglian Gong |
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| Affiliation: | 1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, China;2. State Key Laboratory of Optoelectronic Materials and Technologies, School of Chemistry and Chemical Engineering, Sun Yat‐Sen University, Guangzhou, China;3. BYD Industry Co. Ltd., Shenzhen, China;4. Key Laboratory of Tobacco Chemistry of Yunnan Province, Research and Development of Center, China Tobacco Yunnan Industrial Co. Ltd., Kunming, China |
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| Abstract: | Eu3+‐activated Y(P,V)O4 phosphors were prepared by the EDTA sol‐gel method, and the corresponding morphologies and luminescent properties were investigated. The sample particles were relatively spheroid with size of 2–3 µm and had a smooth surface. The excitation spectra for Y(P,V)O4:Eu3+ consisted of three strong excitation bands in the 200–350 nm range, which were attributed to a Eu3+‐ O2? charge‐transfer band and 1A1?1 T1/1 T2 transitions in VO43?. The as‐synthesized phosphors exhibited a highly efficient red luminescence at 613 nm due to the Eu3+ 5D0?7 F2 electric dipole transition. With the increase in the V5+/P5+ ratio, the luminescence intensity of the red phosphor under UV excitation was greatly improved due to enhanced VO43? → Eu3+ energy transfer. Copyright © 2015 John Wiley & Sons, Ltd. |
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| Keywords: | phosphor sol‐gel growth thermogravimetric analysis luminescence energy transfer |
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