Reversible adsorption-enhanced quantum confinement in semiconductor quantum dots

被引：38

作者：

Sarkar, SK ^{[1
]}

Chandrasekharan, N ^{[1
]}

Gorer, S ^{[1
]}

Hodes, G ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Mat & Interfaces, IL-76100 Rehovot, Israel

来源：

APPLIED PHYSICS LETTERS | 2002年 / 81卷 / 26期

关键词：

D O I：

10.1063/1.1532109

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Semiconductor quantum dots possess two important properties: Size-dependent increase in band gap (size quantization) and a very high surface-to-volume ratio. We show that cyanide adsorption on this high surface further increases the size quantization in films of CdSe and US quantum dots and that removal of the cyanide reverses this effect. This effect is explained by increased localization due to compression of the electron wave function in the dots by the strongly adsorbed [on both Cd and Se(S)] negatively charged cyanide. (C) 2002 American Institute of Physics.

引用

页码：5045 / 5047

页数：3

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