Changes in the electronic energy structure of CdSe nanocrystals of close-packed array by in situ anneal

被引：7

作者：

Choi, HJ ^{[1
]}

Yang, JK ^{[1
]}

Yoon, S ^{[1
]}

Park, HH ^{[1
]}

机构：

[1] Yonsei Univ, Dept Ceram Engn, Seoul 120749, South Korea

来源：

APPLIED SURFACE SCIENCE | 2005年 / 244卷 / 1-4期

关键词：

nanocrystals; CdSe; electronic structure;

D O I：

10.1016/j.apsusc.2004.10.069

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 synthesized colloidal CdSe nanocrystals through solution process. Nanocrystals showed quantum confinement effects well in solution form. The CdSe nanocrystals coated on Si(1 0 0) wafers were vacuum annealed and analyzed in situ using X-ray absorption and photoelectron spectroscopy to investigate the electronic energy structure of CdSe nanocrystals. As nanocrystalline solids were annealed at high temperature, the absorption edge of Cd M level and valence band maximum of CdSe decreased as the core level binding energy of Cd 3d. In addition, a red shift with the increase of annealing temperature was also confirmed by the photoluminescence observation of CdSe nanocrystals on glass substrate. (c) 2004 Published by Elsevier B.V.

引用

页码：92 / 95

页数：4

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