Question

18. The mobility of carriers in intrinsic germanium sample at room temperature are

µe=3600 cm2 /V-sec and µh=1700 cm2

/V-sec. If the density of electrons is same as holes

and is equal to 2.5 x 1013/cm3

, calculate the conductivity.​

Answer 1

Explanation:

At room temper- ature, the intrinsic concentration in the silicon is ni = 1.5×1016 per m3. The electron and hole mobilities are µe = 0.13 m2 V−1 s−1 and µh = 0.05 m2 V−1 s−1.