Studies on the defect structure for Cu2+ in CdSe nanocrystals

doi:10.1016/j.saa.2009.10.016

IMR OpenIR

	Studies on the defect structure for Cu2+ in CdSe nanocrystals
	Wu, Shao-Yi 1,2; Zhang, Hua-Ming 1; Xu, Pei 1; Zhang, Shan-Xiang 1
通讯作者	Wu, Shao-Yi(wushaoyi@netease.com)
	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 Cu2+ in CdSe nanocrystals is theoretically studied by analyzing the spin Hamiltonian parameters of this impurity center. This center is ascribed to Cu2+ occupying the octahedral interstitial site, rather than the tetrahedral substitutional Cd2+ site proposed by previous work. The Cu2+ 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 Cu2+ in CdSe nanocrystals is discussed, as compared with the conventional trigonally distorted tetrahedral Cu2+ centers in bulk II-VI semiconductors. (C) 2009 Elsevier B.V. All rights reserved.
关键词	Electron paramagnetic resonance Crystal-fields and spin Hamiltonians Cu2+ CdSe nanocrystals
DOI	10.1016/j.saa.2009.10.016
收录类别	SCI
语种	英语
WOS研究方向	Spectroscopy
WOS类目	Spectroscopy
WOS记录号	WOS:000274773700035
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：105[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/101620
专题	中国科学院金属研究所
通讯作者	Wu, Shao-Yi
作者单位	1.Univ Elect Sci & Technol China, Dept Appl Phys, Chengdu 610054, Peoples R China 2.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Wu, Shao-Yi,Zhang, Hua-Ming,Xu, Pei,et al. Studies on the defect structure for Cu2+ in CdSe nanocrystals[J]. SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,2010,75(1):230-234.
APA	Wu, Shao-Yi,Zhang, Hua-Ming,Xu, Pei,&Zhang, Shan-Xiang.(2010).Studies on the defect structure for Cu2+ in CdSe nanocrystals.SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY,75(1),230-234.
MLA	Wu, Shao-Yi,et al."Studies on the defect structure for Cu2+ in CdSe nanocrystals".SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 75.1(2010):230-234.