Shanghai Institute of Optics and Fine Mechanics has made new progress in the research of flexible perovskite solar cell packaging technology
Recently, Associate Researcher Zheng Yifan from the Thin Film Optics R&D Center of the High Power Laser Component Technology and Engineering Department of the Shanghai Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, together with Professor Wei Bin from the School of Mechanical Engineering of Shanghai University and Associate Researcher Shi Wei from the School of Microelectronics, have made important progress in the research field of flexible perovskite solar cells (FPSCs ) encapsulation technology. They proposed a new transparent thermoplastic polyurethane ( TPU ) encapsulation technology, which successfully achieved efficient encapsulation of FPSCs and significantly improved the stability and durability of the device. The relevant research results were published in Energy Technology under the title " Moisture-Resistant Thermoplastic Polyurethane Encapsulation for Flexible Perovskite Solar Cells" .
PSCs have shown great application prospects in the photovoltaic industry due to their high efficiency and low-cost potential, and are regarded as a strong competitor for the next generation of photovoltaic technology. However, the high sensitivity of perovskite materials to moisture and oxygen is one of the main obstacles to their commercialization. Although traditional rigid packaging solutions can effectively isolate devices, their brittleness limits their application in flexible electronic devices. Therefore, the development of flexible packaging technology suitable for FPSCs has become a research hotspot.
In this study, the research team deeply explored the performance of a variety of flexible packaging materials, and finally selected TPU with excellent flexibility, low water permeability and high light transmittance as the packaging material. Through a series of experiments, the compatibility of the TPU packaging process with the PSC module was verified , and lossless packaging was achieved. The efficiency of the device did not show a significant decrease after packaging. In addition, through microscopic morphology characterization and analysis, it was confirmed that TPU packaging can effectively prevent water and oxygen intrusion, delay the decomposition of perovskite materials, and improve the stability of the film. The experimental results show that TPU -encapsulated PSCs can still maintain 95% of the initial photoelectric conversion efficiency after 1000 hours at 25°C and 50% relative humidity , and can still maintain 80% of the initial efficiency after immersion in water for 200 hours , showing excellent stability improvement. In addition, TPU packaging has significant advantages in manufacturing costs, provides systematic and comprehensive guidance for the packaging design of FPSCs , and provides key technical support for promoting PSCs technology from the laboratory to commercial production, which is expected to trigger major changes in the field of renewable energy.
Recently, Associate Researcher Zheng Yifan from the Thin Film Optics R&D Center of the High Power Laser Component Technology and Engineering Department of the Shanghai Institute of Optics and Precision Mechanics, Chinese Academy of Sciences, together with Professor Wei Bin from the School of Mechanical Engineering of Shanghai University and Associate Researcher Shi Wei from the School of Microelectronics, have made important progress in the research field of flexible perovskite solar cells (FPSCs ) encapsulation technology. They proposed a new transparent thermoplastic polyurethane ( TPU ) encapsulation technology, which successfully achieved efficient encapsulation of FPSCs and significantly improved the stability and durability of the device. The relevant research results were published in Energy Technology under the title " Moisture-Resistant Thermoplastic Polyurethane Encapsulation for Flexible Perovskite Solar Cells" .
PSCs have shown great application prospects in the photovoltaic industry due to their high efficiency and low-cost potential, and are regarded as a strong competitor for the next generation of photovoltaic technology. However, the high sensitivity of perovskite materials to moisture and oxygen is one of the main obstacles to their commercialization. Although traditional rigid packaging solutions can effectively isolate devices, their brittleness limits their application in flexible electronic devices. Therefore, the development of flexible packaging technology suitable for FPSCs has become a research hotspot.
In this study, the research team deeply explored the performance of a variety of flexible packaging materials, and finally selected TPU with excellent flexibility, low water permeability and high light transmittance as the packaging material. Through a series of experiments, the compatibility of the TPU packaging process with the PSC module was verified , and lossless packaging was achieved. The efficiency of the device did not show a significant decrease after packaging. In addition, through microscopic morphology characterization and analysis, it was confirmed that TPU packaging can effectively prevent water and oxygen intrusion, delay the decomposition of perovskite materials, and improve the stability of the film. The experimental results show that TPU -encapsulated PSCs can still maintain 95% of the initial photoelectric conversion efficiency after 1000 hours at 25°C and 50% relative humidity , and can still maintain 80% of the initial efficiency after immersion in water for 200 hours , showing excellent stability improvement. In addition, TPU packaging has significant advantages in manufacturing costs, provides systematic and comprehensive guidance for the packaging design of FPSCs , and provides key technical support for promoting PSCs technology from the laboratory to commercial production, which is expected to trigger major changes in the field of renewable energy.
