H2O2-modified NiOx for perovskite photovoltaic modules

Metal halide perovskite semiconductors have garnered interest as promising materials for solar cells due to their exceptional optoelectronic properties such as long carrier diffusion length, low cost, and solution processability. Notably, the power conversion efficiency (PCE) of single-junction perovskite solar cells (PSCs) has achieved a record-high value of 25.6%, while that of tandem PCSs reached nearly 30%.1 However, enhancing efficiency and ensuring long-term operational stability continue to pose significant challenge for PSCs. It is widely recognized that interfacial passivation could reduce interfacial charge recombination, enhance the crystalline quality of perovskites, and thus promote efficient hole collection.