Electronic structures of wurtzite ZnO and ZnO/MgZnO quantum well
Data(s) |
2006
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Resumo |
The band structures of wurtzite ZnO are calculated using the empirical pseudopotential method (EPM). The 8 parameters of the Zn and O atom pesudopotential form factors with Schluter's formula are obtained. The effective mass parameters are extracted by using k.p Hamiltonian to fit the EPM results. The calculated band edge energies (E-g, E-A, E-B, and E-C) at Gamma point are in good agreement with experimental results. The ordering of ZnO at the top of valence band is found to be A(Gamma(7))-B(Gamma(9))-C(Gamma(7)) due to a negative spin-orbit (SO) splitting. Based on the band parameters obtained, the valence hole subbands of wurzite ZnO/MgxZn1-xO tensile-strained quantum wells (QWs) with different well widths and Mg compositions are calculated using 6-band k.p method. (c) 2005 Elsevier B.V. All rights reserved. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Fan WJ; Abiyasa AP; Tan ST; Yu SF; Sun XW; Xia JB; Yeo YC; Li MF; Chong TC .Electronic structures of wurtzite ZnO and ZnO/MgZnO quantum well ,JOURNAL OF CRYSTAL GROWTH,2006,287(1):28-33 |
Palavras-Chave | #半导体材料 #computer simulation #low dimensional structures #zinc compounds #semiconducting II-VI materials #OPTICAL GAIN SPECTRA #BAND-STRUCTURES #ROOM-TEMPERATURE #LASERS |
Tipo |
期刊论文 |