Progress of Two-dimensional MXene in New-type Thin-film Solar Cells

As an renewable and sustainable clean energy, solar energy has the potential to address current energy shortage and reduce environmental pollution caused by fossil fuels consumption.In recent years, the third-generation thinfilm solar cells, such as dye-sensitized solar cells (DSSCs) and perovskite solar cells (PSCs), have gained widespread attention due to their low cost, abundant materials, and high photoelectric performance.However, these devices still face challenges in terms of charge transfer efficiency and operational stability for their commercialization.Two-dimensional (2D) MXene materials have emerged as promising candidates for improving the performance of thin-film solar cells due to their unique properties, including high specific surface area, rich surface functional groups, high conductivity, tunable work function, and hydrophilicity.This review summarizes the recent research progress of 2D MXene materials applied in new thin-film solar cells, focusing on the reaction mechanism that enhance the photoelectric performance of