Impact of the Bottom Interface Modification on the Perovskite Solar Cells

erovskite solar cells (PSCs)have experienced significant progress over the past decade,with their power conversion efficiency (PCE) reaching up to 25‧ 7% from an initial 3‧ 8%‧ Their simple and low-cost manufacturing process,combined with their high light absorption coefficient,excellent carrier mobility,and tunable direct bandgap,has made them highly competitive in the new generation of photovoltaic devices‧ However,defects within the PSCs,particularly at the interface between the perovskite layer and the bottom layers,remain a bottleneck in further improving their efficiency and stability‧ Effective interface modification can enhance the efficiency of perovskite and improve the stability of the device‧ In this paper,we focus on the impact of interface engineering on the performance of PSCs,specifically the modification of the buried interface‧ We highlight the influence of modifying the interface between the electron transport layer (ETL)/ perovskite and the hole transport layer (HTL)/ perovskite‧ By effectively modifying these buried interfaces,we achieve significant improvements in device efficiency and stability‧ Through comparing different materials and experimental methods,we explore a promising pathway for improving device performance‧ Finally,we provide an outlook on the future of PSCs. © 2024 Cailiao Daobaoshe/ Materials Review. All rights reserved.