Physicists boost longevity of perovskite solar cells.

By Oliver Townsend Jul 10, 2024
Physicists extend lifespan of perovskite solar cells.jpegOrginal image from: https://techxplore.com/news/2024-07-physicists-lifespan-perovskite-solar-cells.html

Perovskite solar cells are gaining attention as a promising alternative to traditional silicon solar cells due to their lower cost, higher efficiency, and potential for extended lifespan. Researchers at The University of Toledo’s Wright Center for Photovoltaics Innovation and Commercialization are at the forefront of developing innovative methods to enhance the durability and stability of perovskite solar cells.

Advancements in Perovskite Solar Cell Lifespan

Recent research published in the journal Joule highlights a breakthrough in extending the lifespan of perovskite solar cells. By modifying the chemical structure of a key component in all-perovskite tandem cells, researchers were able to significantly increase the operational lifespan of the cells to over 1,000 hours. This advancement is a crucial step towards commercializing perovskite solar technology.

Innovative Approach to Enhancing Stability

The key to extending the lifespan of perovskite solar cells lies in addressing the stability of the hole-transfer layer, a critical component in the cell’s structure. Traditional hole-transfer layers in low-band-gap tin-lead perovskites have been prone to corrosion, limiting the overall stability of the solar cell. Researchers identified the source of this corrosion and developed a nonconventional hole-transfer layer with a carboxyl group to suppress the deprotonation process, resulting in a lifespan extension of over 1,000 hours with minimal efficiency loss.

Future Implications for Solar Technology

Dr. Yanfa Yan, a senior author of the study, emphasizes the importance of advancing perovskite solar cell technology as a cost-effective and efficient solution for clean energy generation. While significant progress has been made in extending the lifespan of perovskite solar cells, there are still challenges to overcome before these cells can be widely commercialized. Continued research and innovation in this field are crucial for realizing the full potential of perovskite solar technology.

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