Researchers identify copper corrosion issue in perovskite solar cells, propose bismuth layer fix

Chinese researchers discovered that copper electrodes in perovskite solar cells degrade during operation, but found that a thin bismuth coating significantly improves long-term stability and device performance.

First covered Aug 7, 2026 · 1:00 AM PT · 1 article

Researchers identify copper corrosion issue in perovskite solar cells, propose bismuth layer fix — Image via pv-magazine.com

Coverage

9h PV Magazine Researchers warn of unexpected copper corrosion in perovskite solar cells — Researchers in China found that copper electrodes in perovskite solar cells can suffer from edge corrosion during operation, reducing device performance.

More coverage from around the web

ncbi.nlm.nih.gov Highly Air Stable Tin Halide Perovskite Photovoltaics using a Bismuth Capped Copper Top Electrode

intechopen.com Bismuth Halide Perovskites for Photovoltaic Applications | IntechOpen

ui.adsabs.harvard.edu Copper and Bismuth incorporated mixed cation perovskite solar cells by one-step solution process - ADS

sciencedirect.com Copper and Bismuth incorporated mixed cation perovskite solar cells by one-step solution process - ScienceDirect

xray.greyb.com Bismuth-Based Perovskite Solar Cells - Xray

Appeared in: 2026-08-07 (#5)

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