Research Progress of Perovskite Materials in Hot Carrier Solar Cells

The energy loss in the process of hot carrier relaxation is the main factor limiting the further improvement of the efficiency of solar cells. In recent years, researchers have proposed the concept of photovoltaic devices based on the energy utilization of hot carriers, aiming at collecting and utilizing the energy of hot carriers before they relax to the edge of the energy band. Compared with traditional semiconductors, perovskite materials have a slower hot carrier relaxation rate and have the potential to realize hot-carrier solar cells. This review first introduces the main structures of hot carrier solar cells, then summarizes the research progress of perovskite materials in the hot carrier relaxation process and effective extraction, and discusses the current suitable hot carrier extraction materials. Finally, the development direction of perovskite materials in hot carrier solar cells is prospected.