文献类型：期刊文献

英文题名：Effect of annealing on the structural and optical properties of non-coated and silica-coated ZnS:Mn nanoparticles

作者：Mu, Jin[1]; Gu, Danying[1]; Xu, Zhizhen[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Shanghai 200237, Peoples R China

年份：2005

卷号：40

期号：12

起止页码：2198

外文期刊名：MATERIALS RESEARCH BULLETIN

收录：;EI(收录号：2005469475134);WOS:【SCI-EXPANDED(收录号:WOS:000233502500019)】；

语种：英文

外文关键词：ZnS : Mn nanoparticles; silica shell; annealing

摘要：The Mn2+-doped ZnS nanoparticles stabilized by sodium citrate were synthesized through a simple chemical route. Using the ZnS:Mn nanoparticles as seeds, the silica-coated ZnS:Mn nanocomposites were formed in isopropanol by the controlled hydrolysis of tetraethyl orthosilicate. The photoluminescence spectra confirmed that the Mn2+ ions were incorporated into the ZnS nanoparticles. The annealing effect on the structural and optical properties of these particles was studied over a range of 100-400 degrees C, The results of X-ray diffraction and photoluminescence showed that the silica shell not only improved the thermal stability but also resisted the lattice-deformation and oxidation of the particles. The thermal analysis further confirmed that the non-coated ZnS:Mn nanoparticles were unstable beyond 200 degrees C. 2005 Elsevier Ltd. All rights reserved.