文献类型：期刊文献

英文题名：One-pot synthesis of highly luminescent CdTe/CdS core/shell nanocrystals in aqueous phase

作者：Gu, Zhenyu[1];Zou, Lei[1];Fang, Zheng[1];Zhu, Weihong[1];Zhong, Xinhua[1]

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

年份：2008

卷号：19

期号：13

外文期刊名：NANOTECHNOLOGY

收录：;EI(收录号：20081211152801);WOS:【SCI-EXPANDED(收录号:WOS:000254174400014)】；

语种：英文

外文关键词：Biocompatibility - Luminescence - Organometallics - Semiconducting cadmium telluride - Solutions - Synthesis (chemical)

摘要：Surface passivation of nanocrystals with suitable organic or inorganic materials is key to improving the photoluminescence (PL) efficiency and stability of nanocrystals. Although the hot-injection organometallic approach is a powerful tool to achieve different kinds of core/shell structures, direct synthesis of such structures in aqueous phase, which bears many advantages such as biocompatibility, water-solubility, environment-friendliness, and cheapness, is less often reported. Herein we present a facile approach for the one-pot preparation of a water-soluble core/shell structure with CdTe cores packed in a CdS shell in aqueous phase. In comparison with plain CdTe nanocrystals, the PL efficiency of the obtained CdTe/ CdS core/shell structure can approach about 75%. The stability of the core/shell structure to UV irradiation and oxidation is also improved.