【摘要】 用还原型谷胱甘肽(GSH)作为稳定剂,合成了水溶性的CdTe/ZnTe核壳结构的半导体量子点.考察了Zn/Cd反应物配比及GSH用量对CdTe/ZnTe量子点的性能影响.用高分辨透射电子显微镜(HRTEM)和X射线粉末衍射(XRD)光谱对CdTe和CdTe/ZnTe的形貌和晶体结构进行了表征.荧光光谱结果表明,核壳结构的CdTe/ZnTe量子点比单一的CdTe量子点具有更高的荧光量子产率和更好的光活化性能.更多还原

【Abstract】 Water-soluble CdTe/ZnTe core-shell quantum dots(QDs) are synthesized using glutathione(GSH) as stabilizer.The effects of molar ratios of Zn/Cd and Zn/GSH on the optical property of QDs are in-vestigated by fluorescence spectroscopy.The morphology and crystal structure of the obtained QDs have been characterized by high-resolution transmission electron microscopy(HRTEM) and power X-ray diffrac-tion(XRD).In comparison with the plain CdTe QDs,both photoluminescence quantum yield(PLQY) and photoactivity of the CdTe/ZnTe core-shell QDs have been greatly improved.更多还原