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/m$^2$). 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/m$^2$ (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 TiO$_2$-based photoelectrodes depending on the structure, morphology and the thickness of the TiO$_2$ layers.