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al-in-to t1_ixwt036 wrote

Reply to comment by littleMAS in Record efficiency of 26.81% for large silicon solar cells by Wagamaga

There is a technical limit, about 34%, so we are 80% there. To go beyond that you have to use multi junction cells, which are a lot more expensive. Perovskite does multi cell, but with efficiency level similar to conventional methods

It's generally better to make it cheaper than more efficient, but both is always better.

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