The synthesis and modification of CdTe/CdS core shell quantum dots
The synthesis and modification of CdTe/CdS core shell quantum dots
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DOI：
10.1016/j.saa.2015.06.124
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发表时间：
2015-12-05
影响因子：
4.4
通讯作者：
Yan, Zhengyu
中科院分区：
文献类型：
--
作者：
Chen, Jianqiu;Xiao, An;Yan, Zhengyu
以谷胱甘肽为修饰剂，在水相体系中合成了一种简单、经济的CdTe量子点的合成方法。研究了不同反应时间下制备的CdTe量子点的荧光性质，优化了合成条件。分别采用回流和微波两种方法对合成的CdTe量子点进行修饰，得到具有核壳结构的CdTe/CDS量子点。利用光致发光(PL)和倒置荧光显微镜对所制备的CdTe/CDS量子点进行了表征，发现其具有较高的荧光强度和良好的光学性能。研究还表明，微波合成的CdTe/CDS量子点具有更分散的颗粒尺寸和更高的荧光强度。(C)2015爱思唯尔B.V.保留所有权利。
A simple and economical synthesis method of CdTe quantum dots (QDs) has been developed using glutathione as a modifier in an aqueous system. The fluorescent properties of as-prepared CdTe QDs at different reaction times were studied to optimize the synthesis conditions. CdTe/CdS QDs with core-shell structure was obtained by modifying as-synthesized CdTe QDs with refluxing and microwave method, respectively. The properties of the CdTe/CdS QDs were thoroughly investigated by photoluminescence (PL) and inverted fluorescence microscope, and exhibited high fluorescence intensity and good optical property. The study also shows that the microwave synthesis of CdTe/CdS QDs had more dispersed particle size and higher fluorescence intensity. (C) 2015 Elsevier B.V. All rights reserved.