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14 September 2020 External light trapping for solar cells
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We use nonimaging, statistical-ray optics and ray-tracing simulations to study external light traps as a cost-effective means to enhance the absorption of optically imperfect solar cells. Our main finding is that the optical performance of a cell may be compromised substantially without affecting its overall performance if a trap is being used. As a result, simpler cell construction that gives better charge-transport abilities may be considered. As a case study, we show that the thickness of a silicon cell may be reduced to less than a micron without compromising its efficiency and that the efficiency of perovskite cell may increase substantially, almost up to its theoretical limit.

© 2020 Society of Photo-Optical Instrumentation Engineers (SPIE) 1947-7988/2020/$28.00 © 2020 SPIE
Ido Frenkel, Shilpi Shital, and Avi Niv "External light trapping for solar cells," Journal of Photonics for Energy 10(3), 037002 (14 September 2020).
Received: 10 June 2020; Accepted: 3 September 2020; Published: 14 September 2020

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