Q$\mathrm{.}7$ Set. $($A$)$ A solar cell under AM$1$ illumination produces a short circuit current of $15$ mA$.$ Under the above conditions determine the Voc. What is the maximum power absorbed by the solar cell. Calculate the Fill Factor of the solar cell.

Given: ni $($at $300$k$)=1\mathrm{.}5$ x $1010$ cm$-3.$ Acceptor and donor doping concertation are $2$ x $1016$ cm$-3$ and $1020$ cm$-3$ respectively. Diffusion length of hole and electrons are $10-3\mathrm{.}5$ cm and $2\mathrm{.}5$ x$10-2$ cm respectively. Mean carrier life time are e $=10-5$ sec and h $=10-6$ sec are respectively. Junction area A $=1$ cm$-2.$