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Non-Tech : Alternative energy -- Ignore unavailable to you. Want to Upgrade?


To: gg cox who wrote (16823)11/29/2017 1:52:42 PM
From: Eric  Respond to of 16955
 
Yes,

Theoretical limit for a single junction Si cell very close to 33%.

Tri-layer cells are just around 50%.

But the Rectenna (with better low voltage drop diodes) should hit around 80%.

Maybe a couple decades away.

Edit:

Another name for it is the nantenna

NREL has some good papers on the subject.