ESR AND PHOTO-ESR INVESTIGATIONS OF ZINC VACANCIES AND INTERSTITIAL OXYGEN IONS IN UNDOPED ZNO CERAMICS

被引：99

作者：

POPPL, A

VOLKEL, G

机构：

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1991年 / 125卷 / 02期

关键词：

D O I：

10.1002/pssa.2211250218

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The photosensitive ESR signals of singly negatively charged zinc vacancies (V(Zn)BAR, (V(Zn)BAR)2BAR) and interstitial oxygen ions in a tetrahedral surrounding (O(itetr)BAR) are detected in undoped ZnO ceramic and their optical excitation and quenching behaviour is studied using the photo-ESR method. The investigations show that all these defects are filled by electrons and have a concentration comparable to that of the oxygen vacancies. The photo-ESR experiments allow to arrange both defects in the energy-band diagram energetically. In contrast to electron irradiated ZnO single crystals the neutral zinc vacancy (V(Zn)x) can only be detected under intensive optical illumination at T = 7 K.

引用

页码：571 / 581

页数：11

共 13 条

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