Perovskite/silicon tandem solar cells based on different layers and structures

Abstract

Perovskite/silicon tandem solar cells offer great potential for achieving high-efficiency solar energy conversion. Through the absorption of a wide range of wavelength sunlight, they are not limited by the Shockley-Queisser limit in single-junction silicon solar cells. They have shown impressive progress in recent years, reached a power conversion efficiency (PCE) of 32.5%, and have a bright prospect in the future. In light of the condition of the solar industry today, this article mainly introduces the development status and the main progress direction of the perovskite/silicon tandem solar cells in recent years. In terms of efficiency improvement, it primarily uses perovskite unit band gap tuning and recombination layer optimization. Then the typical cell structures (2-terminal and 4-terminal) and some innovations (3-terminal) are introduced. The summary of these frontier researches is valuable and can guide the direction for later improvement. Lastly, the perovskite/silicon tandem solar cells still have many opportunities and challenges and are expected to become more mainstream solar cells.