A pn diode is one in which the doping concentration in the p region is much greater

than that in the n region. In such a diode, the forward current is mostly due to the hole injection

across the junction, I $$ Ip$.$ For the specific case in which ND $=51016$ cm$-3,$ Dp $=10$ cm$2=$s$,$

p

$=0$:$1$s$,$ and A $=104$m$2,$ q $=1$:$610-19,$ and ni $=1$:$51010$ cm$-3.$ We know at room

temperature VT $=25$m

$$ Find the voltage V obtained when I $=0$:$2$ mA

$$ Calculate the current due to electron injection

n injection.