decreases with increasing doping concentration

increases with decreasing band gap

does not depend on doping concentration

increases with increase in doping concentrations

tunneling of charge carriers across the junction

thermo ionic emission

diffusion of charge carriers across the junction

hopping of charge carriers across the junction

The depletion capacitance increases with increase in the reverse bias

The depletion capacitance decreases with increase in the reverse bias

The depletion capacitance increases with increase in the forward bias

The depletion capacitance is much higher than the depletion capacitance when it is forward bias.