Investigation of electronic properties of crystalline silicon solar cells

Polycrystalline silicon solar cells use standard optimized pattern of top electrode in order of effective collection of electric charges and minimized shading. We present the results of electric measurement on polycrystalline silicon solar cells with non-standard shape of top electrode which is designed so as to follow the grain boundaries. The aim is to estimate the influence of mentioned topology. The ac measurements were performed in the dark with increased temperature influence (range from 298 to 348 K) and equivalent circuit elements were calculated using the models of complex impedance characteristics.