ICCAS OpenIR
Optical spectra of CdSe nanocrystals under hydrostatic pressure
Li, JB; Li, GH; Xia, JB; Zhang, JB; Lin, Y; Xiao, XR
2001-03-05
Source PublicationJOURNAL OF PHYSICS-CONDENSED MATTER
ISSN0953-8984
Volume13Issue:9Pages:2033-2043
AbstractOptical spectra of CdSe nanocrystals are measured at room temperature under pressure ranging from 0 to 5.2 GPa. The exciton energies shift linearly with pressure below 5.2 GPa. The pressure coefficient is 27 meV GPa(-1) for small CdSe nanocrystals with the radius of 2.4 nm. With the approximation of a rigid-atomic pseudopotential, the pressure coefficients of the energy band are calculated. By using the hole effective-mass Hamiltonian for the semiconductors with wurtzite structure under various pressures, we study the exciton states and optical spectra for CdSe nanocrystals under hydrostatic pressure in detail. The intrinsic asymmetry of the hexagonal lattice structure and the effect of spin-orbit coupling on the hole states are investigated. The Coulomb interaction of the exciton states is also taken into account. It is found that the theoretical results are in good agreement with the experimental values.
Indexed BySCI
Language英语
WOS IDWOS:000167519500031
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:27[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/77624
Collection中国科学院化学研究所
Corresponding AuthorLi, JB
Affiliation1.Chinese Acad Sci, Inst Semicond, Natl Lab Superlattices & Microstruct, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Li, JB,Li, GH,Xia, JB,et al. Optical spectra of CdSe nanocrystals under hydrostatic pressure[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2001,13(9):2033-2043.
APA Li, JB,Li, GH,Xia, JB,Zhang, JB,Lin, Y,&Xiao, XR.(2001).Optical spectra of CdSe nanocrystals under hydrostatic pressure.JOURNAL OF PHYSICS-CONDENSED MATTER,13(9),2033-2043.
MLA Li, JB,et al."Optical spectra of CdSe nanocrystals under hydrostatic pressure".JOURNAL OF PHYSICS-CONDENSED MATTER 13.9(2001):2033-2043.
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