Abstract:
Perovskite tandem solar cells have developed rapidly and become one of the hotspots in the field of solar photovoltaic research. With the optimization of the structure and preparation process, the power conversion efficiency (PCE) of tandem device has been improved greatly. The perovskite/silicon tandem solar cell has been greatly improved and the efficiency has reached 31.3% for monolithic tandems. We sorts out the development of the tandem solar cell with wide bandgap perovskite as the top sub-cell and crystalline silicon cells and other novel medium-narrow bandgap cells (perovskite cells, organic cells, copper indium gallium selenide (CIGS) cells) as the bottom sub-cells in recent years and systematically summarized the key point and challenge in materials, structures, and optoelectronic properties of top cell, intermediate interconnection layers and bottom cells in this review with the hope that provide some ideas for further improving the PCE of tandem cells. The optical and electrical optimization requirements for low-cost and high-efficiency tandem solar cells in the future are also highlighted.