纳米晶
材料科学
分散性
壳体(结构)
化学工程
离子键合
吸附
蚀刻(微加工)
温度循环
热稳定性
芯(光纤)
带隙
图层(电子)
纳米技术
分析化学(期刊)
热的
光电子学
化学
物理化学
离子
复合材料
有机化学
高分子化学
物理
气象学
工程类
作者
Dingan Chen,Fei Zhao,Hang Qi,Michael Rutherford,Xiaogang Peng
摘要
A new approach for synthesis of high quality core/shell nanocrystals, “thermal-cycling coupled single precursor” (TC-SP), was developed. It was applied for the synthesis of high efficiency, good color purity, nearly monodisperse, alloying-free, and stable CdS/ZnS core/shell nanocrystals with their emission peak tunable between 375 and 475 nm. A comparison study on TC-SP versus the classic successive ionic layer adsorption and reaction (SILAR), both in one pot, revealed that, although the reaction temperature was significantly reduced and the procedure was simplified for TC-SP, the overall quality of the CdS/ZnS core/shell nanocrystals yielded by TC-SP was found to be superior. A quantitative chemical etching method was developed for determining the radial distribution of elements in bandgap/composition engineered nanocrystals.
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