高效率双结钙钛矿叠层太阳能电池研究进展

以钙钛矿电池为顶电池的叠层太阳电池发展迅速，成为太阳能光伏领域的研究热点之一。随着电池结构和制备工艺的优化，叠层电池的光电转换效率快速提升，单片钙钛矿/晶硅叠层电池的效率已达到31.3%。本综述对近年来以宽带隙钙钛矿电池作为顶子电池、晶体硅电池及其他新型中窄带隙电池(钙钛矿电池、有机电池、铜铟镓硒(CIGS)电池)作为底子电池的叠层电池的研究进展进行了系统梳理，总结了叠层电池的顶电池、中间互联层和底电池的材料、结构及光电性能等方面的关键技术及难点，希望能够为进一步提升叠层电池效率提供一些思路。并对未来低成本高效叠层太阳能电池的光学和电学优化需求做出了分析与展望。

Research progress of high-efficiency double-junction perovskite tandem solar cells

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.