期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 13, 期 7, 页码 1778-1782出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b302073h
关键词
-
Luminescent Y2O2S : Eu3+ nanoceramics having an average particle size of 20 nm has been prepared through a gel-polymer thermolysis process employing a urea-formaldehyde resin. In this nanocrystalline system, large blue shifts (in relation to the bulk system) of similar to5000 cm(-1) and similar to2000 cm(-1) in the photoluminescence excitation bands corresponding to the excitonic region and the Eu3+-ligand charge transfer region respectively have been observed. These may be explained by considering possible size dependent changes in optical electronegativity and quantum confinement effects occurring in this large bandgap semiconductor system.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据