A 30-year perovskite solar cell (IMAGE)

Princeton University, Engineering School

A 30-year perovskite solar cell

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An emerging class of solar energy technology, made with perovskite semiconductors, has passed the long-sought milestone of a 30-year lifetime. The Princeton Engineering researchers who designed the new device also revealed a new method for testing long-term performance, a key hurdle on the road to commercialization.

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Photos by Bumper DeJesus

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