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][3] - 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 King Abdullah University of Science and Technology, Freiburg University, and Fraunhofer Institute for Solar Energy Systems, successfully deposited 1,3-diaminopropane dihydroiodide on the uneven perovskite surface, resulting in excellent passivation effects [3] - The treated tandem cells exhibited a power conversion efficiency of 33.1% and an open-circuit voltage of 2.01 volts [3] - The passivation not only improved the surface of the top cell but also affected the entire perovskite layer, enhancing conductivity and fill factor due to the deep field effect [3] Group 2 - The findings enhance the understanding of the internal mechanisms of power conversion in top cells, enabling further development of more efficient tandem solar cells [3] - Surface passivation is identified as a key factor in improving the efficiency and stability of silicon cells, and its breakthrough in tandem cells is significant for the future of the photovoltaic industry [3]