文献类型：期刊文献

英文题名：Upconversion luminescence properties of Tm³⁺-Yb³⁺ co-doped titania-zirconia composites nanocrystals

作者：Lu, Junjie[1];Wang, Deqiang[1];Wang, Hailong[1]

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

年份：2011

卷号：509

期号：41

起止页码：9946

外文期刊名：JOURNAL OF ALLOYS AND COMPOUNDS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000295978500038)】；

基金：This study was supported by Shanghai Leading Academic Discipline Project (B502) and Shanghai Key Laboratory Project (08DZ2230500).

语种：英文

外文关键词：Upconversion emissions; Titania-zirconia composites; Tm3+-Yb3+ rare earth

摘要：Tm3+-Yb3+ co-doped titania-zirconia composites were synthesized by co-precipitation method with aqueous ammonia as precipitator. Time evolution of upconverted emission of thulium in ZT(0.4)-Tm0.01Yb0.04 (40%ZrO2-60%TiO2-1%Tm3+-4%Yb3+) demonstrated ZT(0.4) to be a promising matrix in the field of upconversion luminescence. Raman spectrum shows low phonon energy (800 cm(-1)) of ZT(0.4) ensuring a fluent phonon transition process. The luminescent properties were investigated by photoluminescence spectra. Strong blue and red upconversion emissions could be observed which were attributed to (1)G(4)-H-3(6), F-3(2)-H-3(6), (1)G(4)-F-3(4) transitions, respectively. (C) 2011 Elsevier B.V. All rights reserved.