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Ce3+,Tb3+共掺BaYF5微晶玻璃的光学特性
引用本文:江青云,李晨霞,叶仁广,华有杰,徐时清.Ce3+,Tb3+共掺BaYF5微晶玻璃的光学特性[J].发光学报,2011,32(10):1030-1035.
作者姓名:江青云  李晨霞  叶仁广  华有杰  徐时清
作者单位:1. 中国计量学院 光学与电子科技学院, 浙江 杭州 310018; 2. 中国计量学院 材料科学与工程学院, 浙江 杭州 310018
基金项目:国家自然科学基金(11004177和51072190);教育部新世纪人才计划(NCET-07-0786);浙江省自然科学基金(Z4100030和Y4100571)资助项目
摘    要:采用高温熔融法制备了一种新型的Ce3 +/Tb3+共掺BaYF5微晶玻璃.测试了微晶玻璃的X射线衍射图(XRD)谱、激发光普和发射光谱.研究发现:660℃热处理2h后的玻璃基质中析出BaYF5纳米晶相,根据XRD结果用Scherrer公式计算得到晶粒大小约为27 nm;在近紫外光(338 nm)激发下,观察到BaYF5...

关 键 词:Ce3  +/Tb3共掺  微晶玻璃  能量传递  白光LED
收稿时间:2011-06-07

Optical Properties of Ce3+,Tb3+ Co-doped BaYF5 Glass Ceramics
JIANG Qing-yun,LI Chen-xia,YE Reng-guang,HUA You-jie,XU Shi-qing.Optical Properties of Ce3+,Tb3+ Co-doped BaYF5 Glass Ceramics[J].Chinese Journal of Luminescence,2011,32(10):1030-1035.
Authors:JIANG Qing-yun  LI Chen-xia  YE Reng-guang  HUA You-jie  XU Shi-qing
Institution:1. College of Optical and Electronic Technology, China Jiliang University, Hangzhou 310018, China; 2. College of Mateials Science and Engineering, China Jiliang University, Hangzhou 310018, China
Abstract:A new Ce3+/Tb3+ co-doped BaYF5 glass ceramic was prepared by high temperature melting. The X-ray diffraction spectra, excitation spectra and emission spectra were measured. The results indicate the BaYF5 nanocrystalline phase exists in the glass matrix. Based on the Scherrer equation, the average size about 27 nm of BaYF5 nanocrystalline was calculated. The intense blue emission band(425 nm)assigned to 5d→2F5/2 and 5d→2F7/2 transitions of Ce3+ and blue emission(487 nm), green emission (542 nm), orange emission (582 nm) and red emission (620 nm) assigned to 5D47FJ(J=6,5,4,3) transitions of Tb3+ ions, respectively, were observed at room temperature under 338 nm excitation in the glass ceramics. By adjusting the doped concentration of Ce3+ and Tb3+, the chromaticity coordinate of the glass ceramic is measured to be (0.287, 0.336). The energy transfer between Ce3+ and Tb3+ was analysised systematically. The results indicate that Ce3+ / Tb3+ co-doped BaYF5 glass ceramics is a potential matrix material for white LED.
Keywords:Ce3+/Tb3+ co-doped  glass ceramics  energy transfer  white light LED
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