Materials scientists discover why perovskite solar cells degrade in sunlight

Photo of a thin film perovskite solar cell produced with a manufacturing process fix developed by UCLA researchers and colleagues. Credit: Shaun Tan/UCLA

Materials scientists at the UCLA Samueli School of Engineering and colleagues from five other universities around the world have discovered the major reason why perovskite solar cells—which show great promise for improved energy-conversion efficiency—degrade in sunlight, causing their performance to suffer over time. The team successfully demonstrated a simple manufacturing adjustment to fix the cause of the degradation, clearing the biggest hurdle toward the widespread adoption of the thin-film solar cell technology.

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