15.2 An empirically determined relationship between the bulk mobility of majoritycarriers...

15.2 An empirically determined relationship between the bulk mobility of majoritycarriers and the doping level is

where μ_max = 1360, μ_inin = 92, N₀ = 1.3x10¹⁷ /cm³, α = 0.91 for electrons and thecorresponding numbers for holes are 495,48, 6.3x10¹⁶ and 0.76.

(a). Express the sensitivity of the mobilty μ with respect to the doping level N.

(b). Determine the percentage change in μ for 10% change in doping level from the nominal value for electrons and holes, respectively.