At temperatures near room temperature, the temperature dependence of the conductivity for intrinsic germanium is found to equal σ = 5= CT-3/2 exp (-Eg/2kT) where C is a temperature-independent constant and T is in Kelvins. Using Equation, calculate the intrinsic electrical conductivity of germanium at 140°C. Assume Eg=0. 67 eV and room-temperature (298 K) conductivity o=2. 2 (12-m)-1. 73. 595 (12-m)-1
