Power Conversion Efficiencies of Perovskite and Dye-Sensitized Solar Cells under Various Solar Radiation Intensities

We present the results of a comparative study on behaviour of the photovoltaic parameters in perovskite (PSC), dye-sensitized (DSC) and crystalline silicon (c-Si) solar cells under various intensities of solar radiation (10–1000 W/m2). It was found that unlike c-Si, the power conversion efficiencies of PSC and DSC under low radiation intensities are comparable with the corresponding values observed under standard light intensity of 1000 W/m2 (AM1.5G). We have shown that high performance of the PSC and DSC at low and diffuse lighting conditions can be explained by the properties of the nanostructured TiO2-based photoelectrodes depending on the structure, morphology and the thickness of the TiO2 layers.