Physicochemical approaches for optimization of perovskite solar cell performance

Perovskite solar cells (PSCs) with photovoltaic parameters improved using a number of physicochemical approaches for optimization of structure and properties of their components were fabricated and studied under both standard illumination conditions AM1.5G and reduced illumination intensity. Photoelectrodes based on mesoscopic TiO2 layers with different content of anatase and rutile particles were constructed, as well as the perovskite material and the TiO2—perovskite interface were modified. As a result, the optimized PSCs had increased stability in a humid atmosphere and showed high efficiencies (10–14%) in a wide range of illumination intensities of 10–1000 W m−2.