20% now on double layer perovskite solar cells

Quote:

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Tandem cells made of two perovskite layers with ideal bandgaps have a theoretical efficiency limit of 45% and a practical limit of 35% - both of which are higher than the current practical efficiency limits for silicon. "You get more power for your money,"

https://phys.org/news/2018-03-potassium-perov...iency.html

Regards

Sunny:> ))

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