文献类型：期刊文献

英文题名：Study on mechanism controlling 5D3/5D4emissions of Tb3+ in glasses

作者：Wang, Yang[1];Liu, Siyuan[1];Mao, Jiayi[1];Li, Xinxi[1];Li, Lei[1];Zeng, Huidan[1];Chen, Guorong[1]

机构：[1]East China Univ Sci & Technol, Sch Mat Sci & Engn, Key Lab Ultrafine Mat, Minist Educ, Shanghai 200237, Peoples R China

年份：2017

卷号：185

起止页码：241

外文期刊名：JOURNAL OF LUMINESCENCE

收录：;EI(收录号：20170503297432);WOS:【SCI-EXPANDED(收录号:WOS:000397833600034)】；

基金：This study was supported by the National Natural Science Foundation of China (NSFC 51572081, 51572082).

语种：英文

外文关键词：luminescence glasses; Tb3+; D-5(3)/D-5(4) emissions

摘要：Tb3+ doped SiO2-ZnO-BaO glasses are prepared by melting quenching method and their unique photoluminescent properties for the UV excitation are studied by using emission/excitation spectra and decay curves. Glasses in the composition (mol%) of 60SiO(2)-xZnO-(40-x)BaO-0.2Tb(3) (x=30, 20,10) show the strongest emission peaking at 436 nm which is different from majority of other reported work. Lower content of the free OH groups mainly contribute to this phenomenon due to the decreased probability of the multi-phonon aided non-radiative relaxation process from D-5(3) to D-5(4) energy levels of Tb3+ ions. The Tb3+ concentration also affects the D-5(3)/D-5(4) emissions as a result of the cross-relaxation effect on two nearby Tb3+ ions (D-5(3)-(D4F6)-D-5-F-7-F-7(0)). Moreover, by adjusting Tb3+ concentration and/or ZnO/BaO concentration ratio of the host glass we obtained the adjustable emission with the required CIE chromaticity from blue to green, suggesting that the present Tb(3+)az-doped SiO2-ZnO-BaO glasses are potential as blue/green dual-color luminescent materials for different applications. (C) 2017 Elsevier B.V. All rights reserved.