Studies on the defect structure for Cu(2+) in CdSe nanocrystals

IMR OpenIR

	Studies on the defect structure for Cu(2+) in CdSe nanocrystals
	S. Y. Wu; H. M. Zhang; P. Xu; S. X. Zhang
	2010
发表期刊	Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy
ISSN	1386-1425
卷号	75 期号:1 页码:230-234
摘要	The defect structure for Cu(2+) in CdSe nanocrystals is theoretically studied by analyzing the spin Hamiltonian parameters of this impurity center. This center is ascribed to Cu(2+) occupying the octahedral interstitial site, rather than the tetrahedral substitutional Cd(2+) site proposed by previous work. The Cu(2+) center exhibits slight terragonal elongation distortion (characterized by the elongation parameter rho approximate to 0.03) due to the Jahn-Teller effect. The theoretical spin Hamiltonian parameters and optical transition show good agreement with the experimental data. The above unusual defect structure (occupation and symmetry) for Cu(2+) in CdSe nanocrystals is discussed, as compared with the conventional trigonally distorted tetrahedral Cu(2+) centers in bulk II-VI semiconductors. (C) 2009 Elsevier B.V. All rights reserved.
部门归属	[wu, shao-yi; zhang, hua-ming; xu, pei; zhang, shan-xiang] univ elect sci & technol china, dept appl phys, chengdu 610054, peoples r china. [wu, shao-yi] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;wu, sy (reprint author), univ elect sci & technol china, dept appl phys, 4,sect 2,jian she bei rd, chengdu 610054, peoples r china;wushaoyi@netease.com
关键词	Electron Paramagnetic Resonance Crystal-fields And Spin Hamiltonians Cu(2+) Cdse Nanocrystals Atomic Screening Constants Electron-paramagnetic-res Quantum Dots Fine-structure Capped Cdse Scf Functions Epr Ions Nanoparticles Resonance
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31586
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	S. Y. Wu,H. M. Zhang,P. Xu,et al. Studies on the defect structure for Cu(2+) in CdSe nanocrystals[J]. Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,2010,75(1):230-234.
APA	S. Y. Wu,H. M. Zhang,P. Xu,&S. X. Zhang.(2010).Studies on the defect structure for Cu(2+) in CdSe nanocrystals.Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy,75(1),230-234.
MLA	S. Y. Wu,et al."Studies on the defect structure for Cu(2+) in CdSe nanocrystals".Spectrochimica Acta Part a-Molecular and Biomolecular Spectroscopy 75.1(2010):230-234.