文献类型：期刊文献

英文题名：Synthesis of Positively Charged Luminescent CdTe Nanocrystals in Aqueous Solution

作者：Zou, Lei[1];Wang, Jian[1];Fang, Zheng[1];Gu, Zhenyu[1];Zhong, Xinhua[1]

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

年份：2009

卷号：30

期号：3

起止页码：388

外文期刊名：JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY

收录：;EI(收录号：20091111951690);WOS:【SCI-EXPANDED(收录号:WOS:000263650900018)】；

基金：We thank the National Natural Science Foundation of China (Nos. 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：Aqueous synthesis; CdTe nanocrystals; photoluminescence; positively charged

摘要：Highly luminescent positively charged CdTe nanocrystals were prepared from a facile and reproducible approach by the reaction of Cd2+ and HTe- in the presence of mercaptoethylamine. The influence of various experimental variables, including pH value, growth temperature, Te-to-Cd ratio, as well as Cd-to-ligand ratio, on the growth rate and optical properties of CdTe nanocrystals have been systematically investigated. Experimental results indicate that the pH value and Te-to-Cd molar ratio play the crucial role in determining luminescent properties of the obtained CdTe nanocrystals. The mechanism for the resulting high-quality optical properties of the resulting CdTe nanocrystals was also elucidated.