The effect of bromine doping on the perovskite solar cells modified by PVP/PEG polymer blends

Bandgap tunable CH3NH3PbI3-xBrx perovskite film modified by PVP/PEG polymer blends was successfully prepared and used as light harvesting layer in ZnO-TiO2 nanorod arrays based perovskite solar cell with enhanced efficiency and stability.35