文献类型：期刊文献

英文题名：Tunable blue emission from Ta5+ doped sulfophosphate glass-ceramics

作者：Yang, Yifan[1]; Zeng, Huidan[1]; Ren, Jing[1]; Yuan, Shuanglong[1]; Fan, Chaxing[1]; Sun, Luyi[2]; Chen, Guorong[1]

机构：[1] Key Laboratory for Ultrafine Materials, Ministry of Education, East China University of Science and Technology, Shanghai 200237, China; [2] Department of Chemistry and Biochemistry and Materials Science, Engineering and Commercialization Program, Texas State University-San Marcos, San Macros, TX 78666, United States

年份：2012

卷号：95

期号：7

起止页码：2206

外文期刊名：Journal of the American Ceramic Society

收录：EI(收录号：20122915251199)

语种：英文

外文关键词：Sodium compounds - Heat treatment - Luminescence - Tantalum compounds - Positive ions - Zinc oxide - Glass ceramics

摘要：In this article, Ta5+ ion doped P2O 5-ZnO-ZnSO4-Na2O glasses were prepared. Luminescence properties of Ta5+ doped sulfophosphate glass-ceramics were studied. A broad blue emission band of Ta5+ doped sulfaphosphate glass excited by 254 nm Ultraviolet (UV) light was observed at the range 350-600 nm. After thermal treatment, the luminescence intensity of Ta 5+ doped glass-ceramic was significantly enhanced by over 400%. More importantly, the luminescence intensity could be fine-tuned by controlling the matrix crystallinity surrounding the Ta5+ cations, which was achieved via a facile heat treatment. Compared with the glass samples, the decay life of Ta5+ doped glass-ceramics became shorter and two different decay times were calculated based on a second-order exponential decay model. This indicates that Ta5+ cations properly exist around NaZnPO 4crystallite in the residual glass phase. ? 2012 The American Ceramic Society.