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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References
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Green, M.A. Tracking solar cell conversion efficiency. Nat Rev Phys 2, 172–173 (2020). https://doi.org/10.1038/s42254-020-0163-y
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DOI: https://doi.org/10.1038/s42254-020-0163-y
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