A slab of the type has been doped with ND 5 1016/cm3 atoms of phosphorous. Holes are being injected into the slab at the right (x 5 L) and are removed from the slab at the left (x 5 0) in such a way...

A slab of the type has been doped with ND 5 1016/cm3 atoms of phosphorous. Holes are being injected into the slab at the right (x 5 L) and are removed from the slab at the left (x 5 0) in such a way as to maintain the profi le p(x) 5 1014[1 2 exp(2xy(10 m)]/cm3 . (a) Sketch and label the hole concentration p(x) and current density Jp(x) for 0 # x # 50 m. (b) You will fi nd that the current density is highest where the concentration is lowest, and vice versa. Do you see a contradiction here? Explain!