Stable Perovskite Solar Cells: Domestic Lead-Free Solar Battery Development Breakthrough
On May 30, 2025, an exciting announcement was made regarding the advancement of solar battery technology. Researchers have developed stable perovskite solar cells which promise significant improvements in efficiency and longevity.
The research team from Nanjing University has recently revealed that their work on vapor-assisted surface reconstruction has led to solar modules that maintain stability outdoors. This breakthrough was published in the journal Science and highlights a new technique that enhances the durability and efficiency of solar cells.
Perovskite solar cells have gained attention due to their potential for high efficiency at a lower cost compared to traditional silicon solar cells. However, previous iterations faced challenges with stability under real-world conditions. The new method developed by the team addresses these issues, creating modules that can withstand environmental factors while maintaining performance.
The researchers have demonstrated that their solar modules can achieve significant outdoor stability, especially with a 30 cm × 30 cm module that showed remarkable performance stability under real-world conditions. This advancement is crucial for commercial applications, as it allows for the use of perovskite solar cells in various environments without the risk of rapid degradation.
Two key techniques were employed to enhance the formation of the perovskite structure, ensuring robust stability throughout the manufacturing process. This systematic approach allows for a reliable production chain, transitioning from the laboratory to large-scale manufacturing.
The vapor-assisted technique allows for a more efficient and environmentally friendly production of perovskite solar cells, eliminating the need for specialized equipment. This method leverages the unique properties of the perovskite material, optimizing its arrangement for better energy conversion rates.
The researchers achieved a power conversion efficiency (PCE) of 25.3% for a small 0.16 cm² solar cell and 19.6% for a larger 785 cm² module. This performance indicates that these new solar cells can compete effectively with existing silicon-based technology.
Despite these advancements, the long-term stability of these modules still needs to meet industry standards, particularly for large-scale commercial use. The team is committed to further testing and optimization to ensure that these perovskite solar cells meet the rigorous demands of the market.
Overall, the development of stable, lead-free perovskite solar cells represents a significant step forward in renewable energy technology, potentially leading to more sustainable and efficient solar power solutions.
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