Microwave-assisted synthesis of water-dispersed CdTe/CdSe core/shell type II quantum dots

被引：24

作者：

Sai, Li-Man ^{[1
]}

Kong, Xiang Yang ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Shanghai 200240, Peoples R China

来源：

NANOSCALE RESEARCH LETTERS | 2011年 / 6卷

关键词：

CDTE NANOCRYSTALS; SEMICONDUCTOR NANOCRYSTALS; PHOTOLUMINESCENCE; EPITAXY;

D O I：

10.1186/1556-276X-6-399

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A facile synthesis of mercaptanacid-capped CdTe/CdSe (core/shell) type II quantum dots in aqueous solution by means of a microwave-assisted approach is reported. The results of X-ray diffraction and high-resolution transmission electron microscopy revealed that the as-prepared CdTe/CdSe quantum dots had a core/shell structure with high crystallinity. The core/shell quantum dots exhibit tunable fluorescence emissions by controlling the thickness of the CdSe shell. The photoluminescent properties were dramatically improved through UV-illuminated treatment, and the time-resolved fluorescence spectra showed that there is a gradual increase of decay lifetime with the thickness of CdSe shell.

引用

页码：1 / 7

页数：7

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