New solar cells achieve 40% conversion efficiency
This has allowed them to achieve a conversion efficiency of 40.7 percent. The theoretical limit of single junction cells is only 37 percent and actual measured values are much lower than that. The three junction cells that the team are building right now have a theoretical limit of 58 percent efficiency and they predict that 45-50 percent measured efficiency can be achieved.
[Source: PhysOrg, thanks to Ray and TX CHL Instructor for the tip]
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