Research Progress on High-Efficiency Perovskite Solar Cells Based on Material Property

Against the social background of the deepening environmental protection theme, perovskite solar cells (PSCs) have become a hot spot in the field of photovoltaics by reflecting good development prospects and great commercial value in the field of renewable energy. As the core material of PSC devices - light absorbing materials, perovskite materials affect the increase or decrease of power conversion efficiency (PCE) of PSC devices to a certain extent. In order to obtain high-efficiency PSC devices for large-scale commercialization, it is crucial to address contemporary issues such as device stability and inter-compatibility (e.g., surface defects, bandgap matching, etc.). In this paper, focusing on the latest research results, we analyze the development direction of PSC devices in terms of material properties, device structure, crystal surface defects, and research cost, and discuss some important factors affecting the magnitude of the power conversion efficiency of PSC devices, such as stability, and non-toxicity/low toxicity. In addition, we demonstrate new ideas on the flexibility and compatibility of PSC devices in applications such as multi-junction cells and flexible devices. We provide a basic yet comprehensive overview to understand the role of perovskite solar cells in improving efficiency and adding commercial value.