文献类型：期刊文献

英文题名：Preparation of Highly Luminescent CdTe/CdS Core/Shell Quantum Dots

作者：Wang, Jian[1];Long, Yitao[1];Zhang, Yuliang[1];Zhong, Xinhua[1];Zhu, Linyong[1]

机构：[1]E China Univ Sci & Technol, Dept Chem, Adv Mat Lab, Shanghai 200237, Peoples R China

年份：2009

卷号：10

期号：4

起止页码：680

外文期刊名：CHEMPHYSCHEM

收录：;EI(收录号：20200708174308);WOS:【SCI-EXPANDED(收录号:WOS:000264513000012)】；

基金：We thank the National Natural Science Foundation of China (No. 20501005, 20771037), the Program for New Century Excellent Talents in University of China (NCET-06-0417), Pujiang Talents Project (07pj14032), Shuguang Project (06SG33), and SRFDP (20070251014) for financial support.

语种：英文

外文关键词：core/shell structures; luminescence; nanoparticles; quantum dots; surfactants

摘要：An effective shell-coating route is developed for covering oil-soluble CdTe quantum dots (QDs), which usually tend to aggregate during the heating-up process involved in shell formation. The new route is based on balancing the coordinating capacity and the activation effect of selected surfactants. The thus obtained highly luminescent CdTe/CdS core/shell QDs exhibit photoluminescence quantum yields as high as 92%-among the best results obtained so far for luminescent semiconductor nanocrystals. By changing the size of the CdTe core, or the thickness of the CdS shell, the emission colors of the obtained core/shell nanocrystals can be tuned between the visible and near-infrared regions of the spectrum following an identical procedure.