我国太阳能电池领域，再获重要进展

Core Insights - The research team led by researcher You Jingbi from the Institute of Semiconductors, Chinese Academy of Sciences, has made significant advancements in perovskite solar cells, achieving a power conversion efficiency of 27.2% for prototype devices, which lays a crucial foundation for the industrialization of perovskite solar cells [1] Group 1: Technological Advancements - Perovskite solar cells have rapidly improved in efficiency from an initial 3.8% to over 26% in the past decade, although they still fall short of their theoretical limits [1] - The key to achieving high efficiency lies in the preparation of high-quality perovskite films [1] Group 2: Performance Metrics - The quality of the perovskite films developed in this research has significantly improved, with carrier lifetimes extended to 20 microseconds and a substantial reduction in interface defect density [1] - The solar cells based on these films have been certified by multiple authoritative institutions, achieving a power conversion efficiency of 27.2% [1] Group 3: Stability and Longevity - The solar cells maintained 86.3% of their initial efficiency after continuous operation for 1529 hours [1] - Under accelerated aging conditions at 85°C with light-thermal coupling, the cells retained 82.8% of their initial efficiency after 1000 hours of operation [1]