钙钛矿-硅叠层太阳能电池钝化难题攻克

Core Insights - An international photovoltaic research team has made significant progress in the industrialization of perovskite-silicon tandem solar cells, achieving a power conversion efficiency of 33.1% [1][2] - The advancement is crucial as silicon solar cells approach their theoretical efficiency limit of 29.4%, positioning perovskite-silicon tandem solar cells as the next important technology in the photovoltaic sector [1] Group 1 - The research team, consisting of institutions like King Abdullah University of Science and Technology, Freiburg University, and Fraunhofer Institute for Solar Energy Systems, successfully achieved high-quality passivation on textured silicon bottom cells [1] - The passivation process involved depositing 1,3-diaminopropane dihydroiodide on the uneven perovskite surface, leading to improved performance metrics [1] - The treated tandem cells exhibited an open-circuit voltage of 2.01 volts, indicating enhanced electrical performance [1] Group 2 - The study revealed that passivation not only improves the surface of the top cell but also affects the entire perovskite layer, enhancing conductivity and fill factor due to the deep-level effects of passivation [2] - This understanding of the internal mechanisms of power conversion in tandem cells allows for further development of more efficient solar cells [2] - The breakthrough in surface passivation is significant for the photovoltaic industry, potentially accelerating the commercialization of the next generation of high-efficiency solar cells [2]