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] Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, 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：EI(收录号：20113914364412)

语种：英文

外文关键词：Titanium dioxide - Phonons - Photoluminescence - Precipitation (chemical)

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 ZT0.4-Tm 0.01Yb0.04 (40%ZrO2-60%TiO2- 1%Tm3+-4%Yb3+) demonstrated ZT0.4 to be a promising matrix in the field of upconversion luminescence. Raman spectrum shows low phonon energy (800 cm-1) of ZT0.4 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 1G4-3H 6, 3F2-3H6, 1G4-3F4 transitions, respectively. ? 2011 Elsevier B.V.