HYDROGEN-INDUCED POSITIVE CHARGING OF BURIED SIO2

被引：9
作者：
VANHEUSDEN, K
STESMANS, A
机构：
[1] Department of Physics, Katholieke Universiteit Leuven
来源：
MICROELECTRONIC ENGINEERING | 1993年 / 22卷 / 1-4期
关键词：
8;
D O I：
10.1016/0167-9317(93)90190-G
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Simple hydrogen annealing of the buried oxide (BOX) in the range 450 -700-degrees-C was found to introduce net positive charge with areal densities greater-than-or-equal-to 5 x 10(12) cm-2, while H-2 annealing in the range 700 - 1000-degrees-C was observed to activate a neutral state. Both processes appeared reversible upon appropriate vacuum annealing. The charge was sensed in a novel way - using electron spin resonance - through its band bending effect on probed defects in Si layers close to the BOX. A tentative model based on hydrogen incorporation into oxygen vacancies (Si-Si bonds) may account for the results.
引用
收藏
页码：371 / 374
页数：4
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