Improve The Efficiency Of Perovskite Solar Cells Through The Interface Modification Of G-C3n4 Nanosheets

The passivation strategy is considered to be one of the most effective methods to suppress the non-radiative recombination of perovskite solar cells (PSCs), resulting in excellent photovoltaic performance. Herein, it reported a valid strategy to enhance the photoconversion efficiency (PCE) of PSCs by modifying graphitic carbon nitride (g-C3N4) nanosheets into an electron transport layer interface. It is able to optimize surface morphology and crystal quality of perovskite film, which makes synergistic efforts to improve the PCE from 9.55% to 11.37% with these devices.