Activation mechanism of annealed Mg-doped GaN in air

被引：27
|
作者：
Lin, YJ [1 ]
机构：
[1] Feng Chia Univ, Dept Elect Engn, Taichung 407, Taiwan
来源：
APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 15期
关键词：
D O I：
10.1063/1.1704873
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
In this study, the activation mechanism of annealed Mg-doped GaN in air and the influence of ambient on activation of Mg-doped GaN were investigated. According to the experimental results, we found that the dissociation of Mg-Ga-H, and the formation of hydrogenated gallium vacancies (VGaH2) and gallium vacancies occupied by interstitial Mg during the air-activation process, led to an increase in the hole concentration. In addition, from the observed photoluminescence results and the secondary ion mass spectroscopy measurements, it is suggested that the formation of VGaH2 will result in an enhancement of hydrogen desorption from the Mg-Ga-H complexes. (C) 2004 American Institute of Physics.
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收藏
页码：2760 / 2762
页数：3
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