A pn junction diode and a Schottky diode each have cross$-$sectional areas of A $=8$ x $10-4$ cm$2.$ The reverse saturation current densities at T $=300$ K for the p$-$n junction diode and Schottky diode are $8$ x $10-13$ A$/$cm$2$ and $6$ x $10-9$ A$/$cm$2,$ respectively. Determine the required forward$-$bias voltage in each diode to yield currents of $150$A