کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
748345 | 1462266 | 2011 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Introduction of local tensile strain on Ge substrates by SiGe stressors selectively grown on wet chemically recessed regions for strained Ge-nMOSFETs Introduction of local tensile strain on Ge substrates by SiGe stressors selectively grown on wet chemically recessed regions for strained Ge-nMOSFETs](/preview/png/748345.png)
Introduction of tensile strain into Ge substrates was demonstrated by forming embedded SiGe stressors on the recessed regions formed by an anisotropic wet chemical etching process for strained Ge-nMOSFETs having high electron mobility. A damage-free and well controlled anisotropic wet chemical etching process is developed in order to avoid plasma-induced damages in a conventional RIE process. The uni-axial tensile strain over 1% near the Ge recess-edge regions, which is induced by the embedded SiGe stressors, is also demonstrated for the first time. These results suggest that higher electron mobility than the upper-limit for a Si-MOSFET is obtainable in short channel strained Ge-nMOSFETs with the embedded SiGe stressors.
► Uni-axial tensile strain is applied to Ge for high-mobility Ge-nMOSFETs.
► Anisotropic wet etching for damage-less Ge recess formation.
► Sufficient strain over 1% in Ge for 4 times higher electron-mobility than Si.
Journal: Solid-State Electronics - Volume 60, Issue 1, June 2011, Pages 89–92