Aqueous phase synthesis of biostabilizer capped CdS nanocrystals with bright emission

被引：41

作者：

Zou, Lei ^{[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

来源：

JOURNAL OF LUMINESCENCE | 2009年 / 129卷 / 05期

基金：

中国国家自然科学基金;

关键词：

CdS nanocrystals; Aqueous synthesis; Glutathione; Photoluminescence; SEMICONDUCTOR CLUSTERS; CDTE NANOCRYSTALS; LUMINESCENT; PHOTOCHEMISTRY; NANOPARTICLES; QUALITY; ZNS;

D O I：

10.1016/j.jlumin.2008.12.009

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

In this manuscript, we present a facile approach for the synthesis of highly luminescent CdS nanocrystals (maximum quantum yield of 36%) by the reaction of Cd2+ and thiourea in the presence of glutathione (GSH) as capping reagent. The influence of various experimental variables, including pH value, S-to-Cd ratio, as well as Cd-to-ligand ratio, on the growth rate and optical properties of the obtained US nanocrystals has been systematically investigated. Experimental results indicate that the pH value and Cd-to-ligand molar ratio play a crucial role in determining luminescent properties of the obtained CdS nanocrystals. Furthermore, the luminescence intensity can be enhanced significantly when the nanocrystals sample is illuminated by room light. The mechanism for the resulting high-quality optical properties of the obtained US nanocrystals is also elucidated. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：536 / 540

页数：5

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