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Tracking solar cell conversion efficiency

Keeping track of the rapidly improving solar cell performance is not as easy as it might seem. Martin Green describes the Solar Cell Efficiency Tables that have been providing 6-monthly updates of record solar cell performance since the 1990s.

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Fig. 1: Progress in solar cell energy conversion efficiency over the past 27 years compiled from the Solar Cell Efficiency Tables for various technologies (air mass 1.5 G, cell area >1 cm2).


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Correspondence to Martin A. Green.

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Green, M.A. Tracking solar cell conversion efficiency. Nat Rev Phys 2, 172–173 (2020).

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