Dalian Institute of Chemical Technology and others have made progress in the research of large-area perovskite solar cells
The team of Liu Shengzhong, a researcher in the thin film solar cell research group of the Dalian Institute of Chemical Physics, Chinese Academy of Sciences, and Feng Jiangshan, an associate researcher of Shaanxi Normal University, have made progress in the research of large-area perovskite solar cells. Researchers used the vacuum deposition method and combined with the low-temperature annealing strategy to prepare a 400cm2 rigid and 300cm2 flexible high-quality formamidine-based perovskite film, and applied this film to the evaporated formamidine-based perovskite solar cell, which was available in the literature. The highest conversion efficiency of evaporated perovskite solar cells. In recent years, the use of solution methods to prepare perovskite solar cells has progressed rapidly, and the conversion efficiency of small-area perovskite solar cells has reached 25.5%. However, it is difficult for the solution preparation technology to achieve large-area uniform preparation and high-throughput continuous production, and the solution preparation technology causes solvent residues in the perovskite battery, which further affects the stability of the perovskite solar cell. This work adopts the vacuum alternate deposition technology combined with the low-vacuum and low-temperature annealing strategy to effectively control the nucleation and grain growth of the perovskite film, and achieve large-size, high-density, and high-quality CsxFA1-xPbI3 films on 400cm2 rigid and 300cm2 flexible substrates. The perovskite solar cell prepared by combining with the Spiro-OMeTAD hole transport layer has a conversion efficiency of 21.32%, which is the highest conversion efficiency of the perovskite solar cell prepared by the vacuum method available in the literature. In addition, the researchers combined with the hole transport layer prepared by the vacuum method to realize the full vacuum method for the preparation of perovskite solar cells, with a conversion efficiency of 18.89%. The unencapsulated perovskite solar cell can be stored in the dark state for 189 days in an air environment, and the efficiency is increased by 1%, indicating that the perovskite solar cell prepared by the full vacuum method has high stability. Studies have shown that the full vacuum preparation technology can realize the large-area and high-throughput preparation of high-efficiency and high-stability perovskite solar cells, which is of great significance for promoting the industrialization of perovskite solar cells. The related research results are titled High-Throughput Large-Area Vacuum Deposition for High-Performance Formamidine-based Perovskite Solar Cells and published in "Energy and Environmental Science". The first authors of the paper are Feng Jiangshan and Jiao Yuxiao, an assistant researcher at Dalian Institute of Physics. The research work is supported by the Chinese Academy of Sciences' Strategic Pilot Technology Special (Class A) "Proximity Space Science Experiment System", the National Natural Science Foundation of China, the Central University Fund and the Knowledge Innovation Project of the Chinese Academy of Sciences. Pipe Fitting,Butt Welding Tee,Butt Welding Crosses,Stub Ends ZHITONG PIPE VALVE TECHNOLOGY CO.,LTD , https://www.ztpipevalve.com
Schematic diagram of vacuum deposition and rigid and flexible formamidine-based perovskite film