Question

Calculate the diffusion constant for the holes when the mobility of the holes is 400cm^2/V-s and temperature is 300K?

(a) 1.035m m^2/s

(b) 0.035m m^2/s

(c) 1.5m m^2/s

(d) 1.9m m^2/s

The question was asked in exam.

The origin of the question is Diffusion topic in division Conduction in Semiconductors of Electronic Devices & Circuits

Answer 1

Right answer is (a) 1.035m m^2/s

Best explanation: Dp=VT*μn

= (1.38*10^-23*300*400*10^-2)/ (1.6*10^-19)

= 1.035m m^2/s.