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Studies on the defect structure for Cu2+ in CdSe nanocrystals
Wu, Shao-Yi1,2; Zhang, Hua-Ming1; Xu, Pei1; Zhang, Shan-Xiang1
Corresponding AuthorWu, Shao-Yi(wushaoyi@netease.com)
2010
Source PublicationSPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
ISSN1386-1425
Volume75Issue:1Pages:230-234
AbstractThe 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.
KeywordElectron paramagnetic resonance Crystal-fields and spin Hamiltonians Cu2+ CdSe nanocrystals
DOI10.1016/j.saa.2009.10.016
Indexed BySCI
Language英语
WOS Research AreaSpectroscopy
WOS SubjectSpectroscopy
WOS IDWOS:000274773700035
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:80[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/101620
Collection中国科学院金属研究所
Corresponding AuthorWu, Shao-Yi
Affiliation1.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
Recommended Citation
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.
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