X射线光电子能谱
量子点
碲化镉光电
光致发光
透射电子显微镜
水溶液
粉末衍射
材料科学
共轭体系
化学
分析化学(期刊)
核化学
结晶学
纳米技术
化学工程
物理化学
有机化学
光电子学
聚合物
工程类
作者
Xiaoyan Lin,Shuhong Xu,Shuhong Xu,Zhuyuan Wang,Yiping Cui
出处
期刊:RSC Advances
[The Royal Society of Chemistry]
日期:2014-01-01
卷期号:4 (10): 4993-4993
被引量:14
摘要
Thiosalicylic acid (TSA) was used as a stabilizer to synthesize CdTe quantum dots (QDs) in aqueous solution. The reaction conditions, such as refluxing time, precursor concentrations, the molar ratio of reactants, and the pH value, were investigated. Under optimized conditions, the photoluminescence quantum yields (PLQY) of TSA-capped CdTe QDs were up to 15%. The morphology and composition of CdTe QDs were characterized by transmission electron microscopy (TEM), X-ray powder diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Theoretical calculations show that TSA increases electronic coupling through the conjugated π bond structure, thus the TSA-capped CdTe QDs are expected to be applicable in solar cells.
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