OXYGEN-HYDROGEN DONOR COMPLEXES IN GERMANIUM

被引：10

作者：

DEAK, P ^{[1
]}

SCHRODER, B ^{[1
]}

ANNEN, A ^{[1
]}

SCHOLZ, A ^{[1
]}

机构：

[1] TECH UNIV BUDAPEST, INST PHYS, H-1111 BUDAPEST, HUNGARY

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 03期

关键词：

D O I：

10.1103/PhysRevB.48.1924

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Semiempirical cluster calculations are reported on the interaction of interstitial oxygen complexes with hydrogen in germanium. It has been found that-unlike in silicon-the configuration in which the oxygen and one of its neighbors are threefold coordinated is not the saddle point in the diffusion of interstitial oxygen, but a metastable state which can be stabilized by a trapped hydrogen. The resulting structure is a single donor. It is also shown that dioxygen interstitial complexes form readily in germanium. The interaction of such complexes with hydrogen also produces single donors. These findings explain why oxygen acts as a donor in hydrogenated amorphous germanium (a-Ge:H) in contrast to a-Si:H.

引用

页码：1924 / 1927

页数：4

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