Cleaning and Surface Preparation for Sige and Ge Channel Device
Diffusion and defect data, solid state data Part B, Solid state phenomena/Solid state phenomena(2012)
Abstract
Since silicon will ultimately face physical limitations, germanium and III-V materials, such as Ga, GaAs, InGaAs, are being extensively investigated for their high electron and hole mobility advantages. Prior to implementing germanium or III-V materials, it is believed that SiGe with high Ge concentration will be applied for channel materials in pMOS devices with high-k and metal gates in order to simultaneously adjust the work function and to increase the hole mobility. However, introduction of new channel materials leads to new challenges and substantial changes in the FEOL process flow.
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Key words
SiGe,Ge,etch rate,FTIR-ATR,XPS
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