Abstract
With suitable optics to bring radiation onto bifacial solar cells the power output per unit area of silicon wafer may in principle be double that of equivalent monofacial cells for the same incident radiation intensity level. Bifacial cells in fixed non-imaging concentrators which incorporate a coupling dielectric may, in principle, achieve up to seven times the annual energy output of equal area monofacial cells in flat panels. In practice the power gains are closer to three due to optical and thermal losses and asymmetry between the faces of currently available bifacial cells.
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