Photoluminescence Properties and Energy Transfer from Ce3+ to Tb3+ in Zn2SiO-4 Host
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第2期
论文作者：熊晓波 袁曦明 LIANG Yujun SONG Jiangqi WU Qi YIN Guoxiang
文章页码：235 - 240
摘 要：Zn2Si O4︰Tb3+, Zn2 Si O4︰Ce3+, Zn2 Si O4︰Tb3+, Ce3+ phosphors were prepared by solidstate reaction at 1 150 ℃ for 2h under a weak reducing atmosphere. Moreover, the XRD patterns and photoluminescence spectra were recorded and the effects of Tb3+ and Ce3+ concentration on the luminescent properties of as-synthesized phosphors were investigated. The emission spectra under ultraviolet light（333 nm） radiation showed a dominant peak at 542 nm attributed to the 5D4→7F5 transition of Tb3+, which was enhanced significantly（about 45 times） by the co-doping of Ce3+, indicating that there occurred an efficient energy transfer from Ce3+ to Tb3+. According to the Dexter’s energy transfer formula of multipolar interaction, it was demonstrated that the energy transfer between Ce3+ and Tb3+ was due to the electric dipolar-dipolar interaction of the resonance transfer.
熊晓波1,2，袁曦明1，LIANG Yujun1，SONG Jiangqi1，WU Qi2，YIN Guoxiang2
1. Engineering Research Center of Nano-Geomaterials of Ministry of Education, China University of Geosciences2. Hubei Key Laboratory of Forensic Science , Hubei University of Police
摘 要：Zn2Si O4︰Tb3+, Zn2 Si O4︰Ce3+, Zn2 Si O4︰Tb3+, Ce3+ phosphors were prepared by solidstate reaction at 1 150 ℃ for 2h under a weak reducing atmosphere. Moreover, the XRD patterns and photoluminescence spectra were recorded and the effects of Tb3+ and Ce3+ concentration on the luminescent properties of as-synthesized phosphors were investigated. The emission spectra under ultraviolet light（333 nm） radiation showed a dominant peak at 542 nm attributed to the 5D4→7F5 transition of Tb3+, which was enhanced significantly（about 45 times） by the co-doping of Ce3+, indicating that there occurred an efficient energy transfer from Ce3+ to Tb3+. According to the Dexter’s energy transfer formula of multipolar interaction, it was demonstrated that the energy transfer between Ce3+ and Tb3+ was due to the electric dipolar-dipolar interaction of the resonance transfer.
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