Coherency strain effects on the optical response of core/shell heteronanostructures

被引：185

作者：

Chen, XB ^{[1
]}

Lou, YB ^{[1
]}

Samia, AC ^{[1
]}

Burda, C ^{[1
]}

机构：

[1] Case Western Reserve Univ, Dept Chem, Ctr Chem Dynam & Nanomat Res, Cleveland, OH 44106 USA

来源：

NANO LETTERS | 2003年 / 3卷 / 06期

关键词：

D O I：

10.1021/nl034243b

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Core/shell-structured CdSe/CdS nanoparticles were prepared by a one-pot procedure. The interface effect was studied by steady-state and time-resolved photoluminescence spectroscopy. Coherency strain across the CdSe/CdS interface is addressed to rationalize the measured optical response. The optical properties of the different core/shell systems agree with Matthews-Blakeslee theory, which predicts a critical thickness for a defect-free shell of less than two monolayers of capping material for the CdSe/CdS system.

引用

页码：799 / 803

页数：5

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