Density functional theoretical determinations of electronic and optical properties of nanowires and bulks for CdS and CdSe

被引：40

作者：

Huang, S. -P. ^{[1
]}

Cheng, W. -D. ^{[1
]}

Wu, D. -S. ^{[1
]}

Hu, J. -M. ^{[1
]}

Shen, J. ^{[1
]}

Xie, Z. ^{[1
]}

Zhang, H. ^{[1
]}

Gong, Y. -J. ^{[1
]}

机构：

[1] Chinese Acad Sci, Fujian Inst Res Struct Matter, Grad Sch, State Key Lab Stuct Chem, Fujian 350002, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2007年 / 90卷 / 03期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1063/1.2432170

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The authors present density functional theoretical results of electronic and optical properties of wurtzite-type CdS and CdSe semiconductor nanowires and bulks. The results show that quantum confinement will increase the energy gap, decrease the dielectric function, change the sign of birefringence, and increase the absolute value of birefringence at low-frequency region, as the dimensions of CdS and CdSe are reduced from the bulk to a nanowire with diameter of several nanometers. The optical spectral peaks of CdSe nanowires show redshifts as compared with the corresponding ones of CdS nanowires. (c) 2007 American Institute of Physics.

引用

页数：3

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