Electrical and physical properties of ErSix on n-type Si(100) surfaces with an alkaline solution etching are investigated. The (111) facet of Si surface affects the SBH between ErSix and n-type Si, because the SBH depends on the surface orientation of Si. A controlling the facet of orientation is a key parameter for a reducing contact resistance for high performance MISFETs. These silicidation reactions are very important to develop the high current drivability devices.
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