A slab of p-type silicon of the type of has been doped with NA 5 1016/cm3 , has a length L 5 1 m, and a cross-sectional area A 5 (20 m) 3 (50 m). Electrons are being injected into the slab at the left...

A slab of p-type silicon of the type of has been doped with NA 5 1016/cm3 , has a length L 5 1 m, and a cross-sectional area A 5 (20 m) 3 (50 m). Electrons are being injected into the slab at the left (x 5 0) and are removed from the slab at the right (x 5 L) in such a way as to maintain a linear profi le n(x) with the following values: n(L) 5 ni 2 y N A and n(0) 5 1010n(L). Find the magnitude and direction of the current i. Use the empirical formulas of to fi nd the mobilities.