Modeling The Effect Of Temperature On The Performance Of Silicon Solar Cell

Abstract

In order to meet the demand for clean, affordable energy in the context of environmental concerns, new technologies in energy conversion must be applied because of human re quirements for energy. One of the sources of renewable energy with the largest potential is solar energy. In this paper a relation between efficiency, sun radiation and temperature was investigated with Mathematical modeling employed using MATLAB software. The open circuit voltage of silicon solar cell decreases remarkably with the rise of temperature from 25°C-100°Cat constant irradiance of 1000W/m2 . However, the short circuit current slightly increases with temperature. The output power of solar cell decreases as the operating temperature rises due to the drastically decrease of voltage which cannot be compensated with a small increase of short circuit current. The maximum output power of silicon solar cell calculated at different cell temperatures 25°C, 50°C, 75°Cand 100°Care 112.2W, 100.5W, 100.8W and 94.6W respectively. Moreover, efficiency of solar cell found at 25°C, 50°C, 75°Cand 100°Care 14.29%, 13.37%, 12.84% and 12.05% respectively. The current of silicon solar cell increases linearly as the irradiation increases whereas the volt age logarithmically grows with the increase of irradiance. Therefore, the output power of solar cell rises as the sun irradiation increases. The maximum power of 0.78W, 1.6W, 2.4W, 3.0W and 3.9W are found at irradiation of 200W/m2 , 400W/m2 , 600W/m2 , 800W/m2 and 1000W/m2 respectively when the solar cell is operated at constant temperature of 25°C