文献类型：期刊文献

英文题名：Full color photoluminescence of Tb³⁺/Sm³⁺ codoped oxyfluoride aluminosilicate glasses and glass ceramics for white light emitting diodes

作者：Lin, Zhenyu[1];Liang, Xiaoluan[1];Ou, Yuwen[1];Fan, Chaxing[1];Yuan, Shuanglong[1];Zeng, Huidan[1];Chen, Guorong[1]

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

年份：2010

卷号：496

期号：1-2

起止页码：L33

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000278744500010)】；

基金：The authors wish to thank Dr. M. Peng (University of Erlangen-Nurnberg, Germany) and Dr. F. Xia (University of Adelaide, Australia) for helpful discussion. The present work is financially supported by the National Natural Science Foundation of China (NSFC 50702021), the Research Funds for Young Teachers for the Doctoral Program by Ministry of Education of China (20070251013) and the Shanghai Leading Academic Discipline Project, project B502.

语种：英文

外文关键词：Rare-earth-doped materials; Photoluminescence; Oxyfluoride glasses and glass ceramics

摘要：A spectroscopic investigation of Tb3+/Sm3+ codoped SiO2-Al2O3-CaO-CaF2 glasses and glass ceramics is presented. Full color photoluminescence combining blue, green and orange-red light was realized by ultraviolet light excitation. The emission spectra showed that the intensity was enhanced with the increasing concentration of F- anions. Meanwhile, the self-quenching effect of sm(3+) ions and an energy transfer from Tb3+ to Sm3+ ions were evidenced. Significantly increased luminescent intensity was observed from glasses to glass ceramics, which was attributed to the precipitation of rare-earth ions into the lower phonon energy CaF2 crystallites. (C) 2010 Elsevier B.V. All rights reserved.