CAS OpenIR
Detecting electronic structure evolution of semiconductor nanocrystals by magnetic circular dichroism spectroscopy
Gao, Xiaoqing1,2; Zhang, Xiuwen1; Yang, Xuekang2; Zhao, Luyang3; Han, Bing4; Alanagh, Hamideh Rezvani2; Tang, Zhiyong2
2019-11-07
Source PublicationNANOSCALE
ISSN2040-3364
Volume11Issue:41Pages:19380-19386
AbstractThe evolution of electronic states of nanocrystals under shape variation is hardly detected by conventional optical and electronic instruments due to the condensed electronic levels of nanocrystals. Herein, we demonstrate that magnetic circular dichroism (MCD) spectroscopy is a high-resolution method to monitor this delicate progress on account of the sensitive Zeeman response to electronic states. In particular, the MCD intensity of the first excitonic transition exponentially decreases with the shape changing from quantum dots to quantum rods owing to the increased density of valence p(z) state with elongation in the z direction, which contributes much less to MCD intensity compared with p(+/-). This work provides a simple but effective strategy for understanding the electronic state evolution in various semiconductor nanomaterials.
DOI10.1039/c9nr03630j
Language英语
WOS KeywordQUANTUM RODS ; EMISSION ; STATES
Funding ProjectNational Key Basic Research Program of China[2014CB931801] ; National Key Basic Research Program of China[2016YFA0200700] ; National Key Basic Research Program of China[2016YFB0700700] ; National Natural Science Foundation of China[21805188] ; National Natural Science Foundation of China[21721002] ; National Natural Science Foundation of China[21475029] ; National Natural Science Foundation of China[11774239] ; National Natural Science Foundation of China[61827815] ; Frontier Science Key Project of Chinese Academy of Sciences[QYZDJ-SSW-SLH038] ; K.C.Wong Education Foundation ; Shenzhen Science and Technology Innovation Commission[JCYJ20170818093035338] ; Shenzhen Science and Technology Innovation Commission[JCYJ20170412110137562] ; Shenzhen Science and Technology Innovation Commission[ZDSYS201707271554071] ; CAS Key Laboratory of Nanosystem and Hierarchical Fabrication[NHF18JJ102]
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Key Basic Research Program of China ; National Natural Science Foundation of China ; Frontier Science Key Project of Chinese Academy of Sciences ; K.C.Wong Education Foundation ; Shenzhen Science and Technology Innovation Commission ; CAS Key Laboratory of Nanosystem and Hierarchical Fabrication
WOS IDWOS:000498821300033
PublisherROYAL SOC CHEMISTRY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/38430
Collection中国科学院过程工程研究所
Corresponding AuthorTang, Zhiyong
Affiliation1.Shenzhen Univ, Shenzhen Key Lab Flexible Memory Mat & Devices, Coll Phys & Optoelect Engn, Shenzhen 518060, Guangdong, Peoples R China
2.Natl Ctr Nanosci & Technol, CAS Key Lab Nanosyst & Hierarch Fabricat, CAS Ctr Excellence Nanosci, Beijing 100190, Peoples R China
3.Chinese Acad Sci, State Key Lab Biochem Engn, Inst Proc Engn, Beijing 100190, Peoples R China
4.North China Power Elect Univ, Beijing 102206, Peoples R China
Recommended Citation
GB/T 7714
Gao, Xiaoqing,Zhang, Xiuwen,Yang, Xuekang,et al. Detecting electronic structure evolution of semiconductor nanocrystals by magnetic circular dichroism spectroscopy[J]. NANOSCALE,2019,11(41):19380-19386.
APA Gao, Xiaoqing.,Zhang, Xiuwen.,Yang, Xuekang.,Zhao, Luyang.,Han, Bing.,...&Tang, Zhiyong.(2019).Detecting electronic structure evolution of semiconductor nanocrystals by magnetic circular dichroism spectroscopy.NANOSCALE,11(41),19380-19386.
MLA Gao, Xiaoqing,et al."Detecting electronic structure evolution of semiconductor nanocrystals by magnetic circular dichroism spectroscopy".NANOSCALE 11.41(2019):19380-19386.
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