【央视新闻】光电转换效率超27% 钙钛矿太阳能电池研制成功

Core Insights - A research team led by researcher You Jingbi from the Chinese Academy of Sciences has developed a perovskite solar cell prototype with a power conversion efficiency of 27.2% [2] - The device maintains 86.3% of its initial efficiency after 1529 hours of continuous operation under standard sunlight conditions [2] - The device retains 82.8% of its initial efficiency after 1000 hours under accelerated aging conditions at 85°C [2] - Perovskite solar cells are recognized for their low-cost printing preparation and high efficiency, making them a promising candidate for next-generation solar technology [2] - Over the past 16 years, the efficiency of perovskite solar cells has increased from 3.8% to over 26%, approaching the efficiency levels of monocrystalline silicon solar cells [2] - A key factor in achieving high-efficiency perovskite solar cells is the preparation of high-quality perovskite semiconductor films [2] - The research team introduced alkali metal oxalates during the growth of perovskite films, which effectively binds the migration of chlorine ions, leading to a uniform distribution within the material [2] - The resulting perovskite semiconductor films exhibit a carrier lifetime of up to 20 microseconds and a low interface defect state density of 10^13 per cubic centimeter [2][3] Industry Implications - The research demonstrates a synergistic improvement in both efficiency and stability of perovskite solar cells, providing significant support for their industrial development [3]