文献类型：期刊文献

英文题名：Gd3+ doping induced enhanced upconversion luminescence in Er3+/Yb3+ co-doped transparent oxyfluoride glass ceramics containing NaYF4 nanocrystals

作者：Guo, Yangyang[1];Zeng, Huidan[1];Yang, Bing[1];Chen, Guorong[1];Chen, Jianding[1];Sun, Luyi[2,3]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China;[2]Univ Connecticut, Inst Mat Sci, Dept Chem & Biomol Engn, Storrs, CT 06269 USA;[3]Univ Connecticut, Inst Mat Sci, Polymer Program, Storrs, CT 06269 USA

年份：2018

卷号：44

期号：9

起止页码：10055

外文期刊名：CERAMICS INTERNATIONAL

收录：;EI(收录号：20181304944253);WOS:【SCI-EXPANDED(收录号:WOS:000431470200005)】；

基金：This work was supported by the Major Project of Science and Technology Commission of Shanghai Municipality (ZD14521100604), the National Natural Science Foundation of China (NSFC51572082, 21476083). The authors are grateful to Prof. J. Ren (Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences) for NMR test and structure analysis.

语种：英文

外文关键词：Glass ceramics; NaYF4 nanocrystals; Gd3+ doping; Phase evolution

摘要：In this article, transparent oxyfluoride glass ceramics containing beta-NaYF4 nanocrystals were successfully prepared via Gd+3 doping. Compared to conventional non-doped glasses, the thermal treatment temperature required for the precipitation of beta-NaYF4 nanocrystals can be lowered with the doping of Gd3+. Furthermore, under the same thermal treatment condition, more beta-NaYF4 nanocrystals were precipitated in Gd3+ doped ones, which greatly improves the luminescence efficiency of rare earth doped glass ceramics. Possible mechanism for the Gd3+ doping induced enhanced upconversion luminescence phenomenon was proposed, based on thorough structural and optical characterizations. The results revealed that the doping of Gd3+ ions could decrease the crystallization activation energy and promote the formation of Y-F-Na bonding, which helps the precipitation of beta-NaYF4 nanocrystals. Consequently, a large enhancement in upconversion luminescence was achieved. Moreover, the strategy can be successfully applied to the development of other glass ceramic systems for various optoelectronic applications.