南工大攻克钙钛矿光伏器件制备难题

Core Insights - Perovskite solar cells are gaining attention as a next-generation photovoltaic technology due to their lower costs, lightweight, and flexibility [1] - A breakthrough at Nanjing University of Technology has achieved a power conversion efficiency of 25.19% for small-area devices, nearing the current mainstream technology's efficiency of 26% [1] - The large-area cells (1 cm²) produced using this method achieved an efficiency of 23.38%, indicating significant industrialization potential [1] Group 1 - The commonly used method for fabricating perovskite solar cells in laboratories is the solution method, which involves toxic solvents that are harmful to health and the environment [2] - The team has developed a "fully vacuum thermal evaporation" technique that deposits thin films in a vacuum environment, eliminating solvents and ensuring precise control over the process [2] - This method is considered an ideal candidate for transitioning high-performance perovskite photovoltaic devices from the lab to production lines [2] Group 2 - The research team proposed a "reverse layer-by-layer" deposition strategy combined with a self-assembling molecular "adhesive" to grow high-quality perovskite crystal films [2] - The three main highlights of this research are high efficiency, high stability, and excellent large-area fabrication performance, which outline the broad industrialization prospects of this technology [2] - The results not only set a world record for the fabrication of perovskite solar cells using fully vacuum thermal evaporation but also provide a solid scientific foundation for future optimization and large-scale manufacturing of efficient, stable, and environmentally friendly perovskite photovoltaic devices [2]