Perovskite Tandem Solar Cells for Low Earth Orbit Satellite Power Applications

The rapid advancement of next‐generation wireless communication technology based on satellite communication using tens of thousands of low Earth orbit (LEO) satellites requires higher technology for solar energy systems. The perovskite solar cells (PSCs) show great potential as modern space solar cells due to high power, high specific power, high radiation resistance, and low cost compared to conventional space solar cells, such as III‐V and Si solar cells. However, the study of PSCs has been almost focused on terrestrial use for commercialization, thereby a few research for PSCs as space solar cells. This review discusses the current progress and future challenges for the space application of PSCs. To understand the space applications, the extreme space environmental conditions are summarized and their impacts on PSCs. Notably, the two‐terminal (2T) monolithic perovskite‐based tandem solar cells (PTSCs) capable of high performance with high efficiency and specific power are discussed. Finally, the key technology and the perspectives for the future development of PSCs are suggested for practical use as space applications.