25 September 2013 Bounds for the rectification efficiency of solar radiation
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Efficiency bounds for the rectification (AC to DC conversion) efficiency of non-coherent broadband radiation are derived, motivated by determining a basic limit for solar rectifying antennas. The limit is shown to be 2/π for a single full-wave rectifier. We also derive the increase in rectification efficiency that is possible by cascading multiple rectifiers. The approach for deriving the broadband limit follows from an analysis of sinusoidal signals of random phase. This analysis is also germane for harvesting ambient radio-frequency radiation from multiple uncorrelated sources.
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Heylal Mashaal, Heylal Mashaal, Jeffrey M. Gordon, Jeffrey M. Gordon, "Bounds for the rectification efficiency of solar radiation", Proc. SPIE 8824, Next Generation (Nano) Photonic and Cell Technologies for Solar Energy Conversion IV, 88240Q (25 September 2013); doi: 10.1117/12.2022622; https://doi.org/10.1117/12.2022622

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