P-N junction's equilibrium condition) (a) Draw a schematic showing carrier concentration profile in a P-N junction for equilibrium condition. (b) Draw a schematic showing the charge concentration profile in a

P-N junction for equilibrium condition. condition.(c) What is a depletion capacitance and how can it be used for calculating the built-in voltage in a PNjunction? Write equations supporting your answer. (d) What is effect of increasing N (given by =1/n=1/na+1/na))on the diffusion and depletion capacitances?NaWrite if they increase or decrease upon increasing N.