Influence of temperature on photovoltaic cells spectral response

Spectral response systems measure how devices respond to narrow bands of irradiance. The main reason to measure spectral response is to use it as a tool to understand the performance of the solar cell. In this study, changes in spectral response due to temperature are studied with and without bias lights. At wavelengths greater than 1000 nm, crystalline silicon cells showed a slight broadening of the spectral response curves towards higher wavelengths with an increase in temperature. A reduction in spectral response intensity at wavelengths 500 - 950 nm was also observed for polycrystalline silicon. The short-circuit current density was found to be higher for monocrystalline silicon.