Facile capping CdS and ZnS shells by thermolysis of ethylxanthate precursors for CdSe/CdS/ZnS nanocrystals

被引：5
|
作者：
Ge, Meiying [1 ]
Yue, Yang [1 ]
Liu, Yufeng [1 ]
Wu, Jie [1 ]
Sun, Yan [1 ]
Chen, Xin [1 ]
Dai, Ning [1 ]
机构：
[1] Chinese Acad Sci, Shanghai Inst Tech Phys, Natl Lab Infrared Phys, Shanghai 200083, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2011年 / 384卷 / 1-3期
关键词：
CdSe nanocrystals; CdSe/CdS/ZnS nanocrystals; Ethylxanthate; Core/shell; LIGHT-EMITTING-DIODES; CORE/SHELL NANOCRYSTALS; SINGLE; SULFIDE; LIGAND; GROWTH; SIZE;
D O I：
10.1016/j.colsurfa.2011.05.014
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
We described the tunable CdS and ZnS shells by facile thermolysis of air-stable cadmium ethylxanthate (Cd(ex)(2)) and zinc ethylxanthate (Zn(ex)(2)) precursors for CdSe/CdS/ZnS core/shell nanocrystals (CCZ NCs). The use of Cd(ex)(2) and Zn(ex)(2) offered adjustable capping reaction temperature ranging from 175 degrees C to 255 degrees C for various CdSe core sizes and CdSanS shell thicknesses in CCZ NCs. Injection procedures of Cd(ex)(2) and Zn(ex)(2) precursors were flexible and optional within several seconds to tens of minutes for the capping process. All these revealed a feasible route to coat CdS and ZnS shells on nanocrystals for manipulating the structure, surface and optical characterizations. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：574 / 579
页数：6
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