Electronic structure of an oxygen vacancy in Al2O3 from the results of Ab Initio quantum-chemical calculations and photoluminescence experiments

被引：0
|
作者：
V. A. Pustovarov
V. Sh. Aliev
T. V. Perevalov
V. A. Gritsenko
A. P. Eliseev
机构：
[1] Ural State Technical University,Institute of Semiconductor Physics, Siberian Branch
[2] Russian Academy of Sciences,Institute of Geology and Mineralogy, Siberian Branch
[3] Russian Academy of Sciences,undefined
来源：
Journal of Experimental and Theoretical Physics | 2010年 / 111卷
关键词：
Oxygen Vacancy; Aluminum Atom; Luminescence Excitation Spectrum; Conduction Band Bottom; Exoelectron Emission;
D O I：
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摘要：
The electronic structure of an oxygen vacancy in α-Al2O3 and γ-Al2O3 is calculated. The calculation predicts an absorption peak at an energy of 6.4 and 6.3 eV in α-Al2O3 and γ-Al2O3, respectively. The luminescence and luminescence excitation spectra of amorphous Al2O3 are measured using synchrotron radiation. The presence of a luminescence band at 2.9 eV and a peak at 6.2 eV in the luminescence excitation spectrum indicates the presence of oxygen vacancies in amorphous Al2O3.
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页码：989 / 995
页数：6
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