所属单位：材料科学工程学院
发表刊物：Chinese Physics Letters
项目来源：自选课题
摘要：The photoluminescence (PL) characteristics of ZnCuInS quantum dots (QDs) with varying ZnS shell thicknesses of 0, 0.5, and 1.5 layers are investigated systemically by time-correlated single-photon counting measurements and temperature-dependent PL measurements. The results show that a ZnS shell thickness of 1.5 layers can effectively improve the PL quantum yield in one order of magnitude by depressing the surface trapping states of the core ZnCuInS QDs at room temperature. However, the PL measurements at the elevated temperature reveal that the core-shell nanocrystals remain temperature-sensitive with respect to their relatively thin shells. The temperature sensitivity of these small-sized single-layered core-shell nanocrystals may find applications as effective thermometers for the in vivo detection of biological reactions within cells.
第一作者：钟秋霖
论文类型：期刊论文
卷号：34
期号：4
页面范围：2
ISSN号：0256-307X
是否译文：否
CN号：11-1959/O4
发表时间：2017-03-21