Highly luminescent CdTe/CdSe colloidal heteronanocrystals with temperature-dependent emission color

被引：161

作者：

Chin, Patrick T. K.

Donega, Celso de Mello

van Bavel, Svetlana S.

Meskers, Stefan C. J.

Sommerdijk, Nico A. J. M.

Janssen, Rene A. J.

机构：

[1] Eindhoven Univ Technol, Soft Matter Cryo TEM Res Unit, NL-5600 MB Eindhoven, Netherlands

[2] Univ Utrecht, Debye Inst, NL-3508 TA Utrecht, Netherlands

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2007年 / 129卷 / 48期

关键词：

D O I：

10.1021/ja0738071

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work we present the preparation of highly luminescent anisotropic CdTe/CdSe colloidal heteronanocrystals. The reaction conditions used (low temperature, slow precursor addition, and surfactant composition) resulted in a tunable shape from prolate to branched CdTe/CdSe nanocrystals. Upon CdSe shell growth the heteronanocrystals show a gradual evolution from typed to type-II optical behavior. These heteronanocrystals show a remarkably high photoluminescence quantum yield (up to 82%) and negligible thermally induced quenching up to temperatures as high as 373 K.

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收藏

页码：14880 / 14886

页数：7

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