Generalized Brooks’ formula and the electron mobility in SixGe1-x alloys

Krishnamurthy, Srinivasan; Sher, A.; Chen, An-Ban
July 1985
Applied Physics Letters;7/15/1985, Vol. 47 Issue 2, p160
Academic Journal
A formula for alloy-scattering-limited electron mobility in semiconductors is obtained for indirect gap systems with multiple band minima. Ali the input parameters needed are defined explicitly. The drift mobility of Si[sub x] Ge[sub 1-x] which has a dip at x ˜0.13 and a broader minimum at x ˜0.5 is calculated by adding alloy scattering to other scattering mechanisms and correlates well with the measured Hall mobility.


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