A research team from China has successfully addressed the challenges of large-scale production technology for third-generation photovoltaic technology, specifically perovskite solar cells. According to a report from Xinhua News Agency on May 23, this team from various enterprises and universities has introduced an innovative coating technology for perovskite solar cell materials, marking a significant advancement from laboratory research to mass application.
The research findings have been published in the journal Science. Yan Buyi, the chief technology officer of Hangzhou Xiana Optoelectronics and the first author of the paper, stated that perovskite solar cells represent a breakthrough in photovoltaic technology. These cells are characterized by their flexibility and lightweight nature, maintaining stable photoelectric conversion efficiency even on cloudy days.
The innovative team has developed a three-dimensional laminar flow wind field technology that tackles the challenge of achieving uniform crystallization over large areas of perovskite films, allowing for precise control over the thickness of these films. Compared to traditional methods, the new technology significantly reduces surface defects and optimizes crystallization patterns, resulting in a 90% reduction in residual solvents.
Field tests indicate that perovskite modules produced using this new technology have a ten-year degradation rate of no more than 10%, meeting the durability requirements for photovoltaic components. A 100-megawatt production line based on this technology has achieved a component yield rate exceeding 98.5%, with a power output of 118W for a 0.79 square meter module.
Furthermore, a 500-kilowatt commercial power station built using this technology demonstrates a unit capacity that exceeds conventional silicon modules by 29% in equivalent full-load hours, and it generates 31.9% more power during high-temperature seasons. This technology is being expanded for use in flexible modules, photovoltaic building integration, and vehicle energy systems.
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