Facile synthesis of monodisperse ZnS capped CdS nanocrystals exhibiting efficient blue emission

被引：71

作者：

Protiere, Myriam

Reiss, Peter

机构：

[1] Univ Grenoble 1, CEA Grenoble, DSM DRFMC SPrAM,LEMOH, CNRS,UMR 5819, F-38054 Grenoble 9, France

[2] CEA, DRT LITEN DTNM 2T, F-38054 Grenoble, France

来源：

NANOSCALE RESEARCH LETTERS | 2006年 / 1卷 / 01期

关键词：

semiconductor nanocrystals; CdS; ZnS; fluorescence; blue emission;

D O I：

10.1007/s11671-006-9001-0

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A new method for the capping of colloidal CdS nanocrystals with ZnS shells is presented. A combination of the monomolecular precursor zinc ethylxanthate (Zn(ex)(2)) and zinc stearate was used to replace hazardous organometallic reagents usually applied in this procedure, i.e. bis(trimethylsilyl) sulfide and diethylzinc. Its simple preparation, air-stability and low decomposition temperature of 150 degrees C make Zn(ex)(2) a very suitable source for the ZnS shell growth. With this precursor, highly luminescent CdS/ZnS core/shell nanocrystals (Q.Y. 35-45%), exhibiting narrow emission linewidths of 15-18 nm (FWHM) in the blue spectral region, can reproducibly be obtained.

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收藏

页码：62 / 67

页数：6

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