  Solar energy is the most convenient and reliable energy source among all
renewable energy resources and an efficient photovoltaic device is required to
convert this energy into utilizable energy. Different types of solar cells (SC)
are commercially available. However, various parameters need to be optimized to
get maximum efficiency from a SC. In this study we have presented a SC model in
which dependence of quantum efficiency (QE) on various parameters has been
investigated. The mobility of the carriers has been varied with wide range
along with the carrier life time (LT). Results show that maximum efficiencies
can be achieved up to 11.10% and 10.81% keeping the electron and hole mobility
to be 1500 cm2V-1s-1 and 300 cm2V-1s-1 respectively with electron and hole
carrier LT to be 3ns and 7ns respectively. The effect of surface recombination
velocity (SRV) has also been brought under observation and the maximum
efficiency is found to be 13.75% at electron and hole SRV equal to be 103ms-1.
Results shows that the higher photovoltaic efficiencies can be achieved by
increasing the mobility and carrier LT while decreasing the surface
recombination velocities.
