Growth of Smooth, Low-Defect Germanium Layers on (111) Silicon via an Intermediate Islanding Process
Growth of Smooth, Low-Defect Germanium Layers on (111) Silicon via an Intermediate Islanding Process
复制标题
通过中间孤岛工艺在 (111) 硅上生长光滑、低缺陷的锗层
DOI:
10.1143/apex.5.071301
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发表时间:
2012
影响因子:
2.3
通讯作者:
Dobbie A
中科院分区:
文献类型:
--
作者:
Dobbie A
Epitaxial growth of thick Ge layers on a (111)-Si substrate has been investigated. We demonstrate that the residual compressive strain in a thin, partially relaxed Ge seed layer can be exploited to promote an intermediate islanding step, significantly reducing the threading dislocation density (∼ 3× 10 8 cm-2) and almost entirely suppressing stacking fault formation. The higher Ge growth rate on the 113 sidewalls of the islands compared to the (111) top surface results in a smooth layer with a low rms surface roughness of 2 nm. Such layers have the potential to be extremely important in realizing next-generation high-mobility n-channel transistors.
DOI:
--
发表时间:
2005
期刊:
影响因子:
--
作者:
T. Wietler;A. Ott;E. Bugiel;K. Hofmann
通讯作者:
K. Hofmann