“分子胶水”提升钙钛矿电池性能

Core Viewpoint - A research team from the University of Manchester has developed a small molecule amine ligand that acts like "molecular glue" to enhance the stability and performance of perovskite solar cells, addressing a key bottleneck for large-scale application of this technology [2][3]. Group 1: Innovation and Performance - The newly developed perovskite solar cells achieve a power conversion efficiency of 25.4% [3]. - After continuous operation for 1100 hours at 85°C under full sunlight, the cells maintain over 95% of their initial efficiency, demonstrating excellent thermal stability [3]. Group 2: Challenges and Solutions - Perovskite materials are considered the "next-generation photovoltaic stars" and are seen as strong competitors to traditional silicon-based solar cells due to their lower cost, lighter weight, and greater flexibility [3]. - The long-term stability issues of perovskite materials, particularly their degradation under high temperatures or light exposure, have been a core challenge for their commercialization [3]. - The research team has introduced a specially designed amine ligand that creates a highly ordered protective interface on the perovskite surface, which not only suppresses defect formation but also promotes efficient charge transport and protects the material from environmental degradation [3]. Group 3: Future Implications - This "molecular glue" is expected to guide the controlled growth of high-quality perovskite films and significantly enhance the durability of the devices, potentially overcoming the main challenges for the large-scale commercialization of perovskite solar cells [3].