Synthesis and Luminescence Properties of a New Type of Green Fluorescent Powder BaAl2Si2O8∶Tb3+, Ce3+
WAN Ying，HE Jiu-yang, MA Yuan-yuan, ZHOU Zhi-xuan, Taximaiti·Yusufu, Aierken·Sidike*
College of Physics and Electronic Engineering of Xinjiang Normal University，Key Laboratory of Mineral Luminescent Material and Microstructure of Xinjiang，Urumqi 830054，China
Abstract：The blue phosphors designed as BaAl2Si2O8∶Tb3+, Ce3+ were prepared with high temperature solid-state reaction. The luminescence properties and mechanism of Tb3+, Ce3+, Tb3+ and Ce3+ Co-doped samples were discussed. Energy transfer between Ce3+ and Tb3+ in the sample was analyzed. The samples were tested with XRD, fluorescence spectra, color coordinates and so on. The results have shown that a small number of Tb3+, Ce3+ ions doping fail to change the crystal structure of BaAl2Si2O8. BaAl2Si2O8∶Tb3+ shows bright green. Emission spectra are the narrow-band spectral lines composed by peak-to-peak value of 487, 545, 583 and 621 nm, which are the typical emission peak generated due to 5D4→7FJ(J=6, 5, 4, 3) transition of Tb3+ ions. The incorporation of Ce3+ not only makes the excitation spectra of BaAl2Si2O8∶Tb3+ from the narrow band excitation to broadband excitation increases the spectral band diversity. The luminous intensity has obvious enhancement, and the color also has some coordination, which makes it more flexible in practical application. The reason for the enhancement of luminescence intensity is not only because of the sensitization of Ce3+ ions, but also due to the energy transfer between Tb3+ and Ce3+. The critical distance of energy transfer has been calculated with the concentration quenching method, which is 153.45 nm. The energy transfer mechanism is ascribed to the dipole-dipole interaction. When the Tb3+ion concentration was increased to 0.07 the transfer efficiency increased to 76.04%.
Key words：BaAl2Si2O8∶Tb3+, Ce3+; Spectral band diversity; Green fluorescent powder；Energy transfer
基金资助: the National Natural Science Foundation of China (11264040, 11464045), the subject of Xinjiang Normal University Key Laboratory (KWFG1605)
通讯作者:
艾尔肯·斯地克
E-mail: aierkenjiang@sina.com
作者简介: WAN Ying, (1992—)，female, postgraduate student, School of Physics and Electronic Engineering, Xinjiang Normal University
e-mail:
yangwangxingkongwy@163.com
引用本文:
万 英，何久洋，马媛媛，周芷萱，塔西买提·玉苏甫，艾尔肯·斯地克. 一种新型可协调绿色荧光材料BaAl2Si2O8∶Tb3+, Ce3+的发光性质与能量传递[J]. 光谱学与光谱分析, 2017, 37(05): 1595-1600.
WAN Ying，HE Jiu-yang, MA Yuan-yuan, ZHOU Zhi-xuan, Taximaiti·Yusufu, Aierken·Sidike. Synthesis and Luminescence Properties of a New Type of Green Fluorescent Powder BaAl2Si2O8∶Tb3+, Ce3+. SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 37(05): 1595-1600.
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