Conventional light trapping techniques are inefficient at the sub-wavelength scale. This is the main limitation for the thickness reduction of thin-film solar cells below 500nm. We propose a novel architecture for broadband light absorption in ultra-thin active layers based on plasmonic nano-cavities and multi-resonant mechanism. Strong light enhancement will be shown numerically for photovoltaic materials such as CIGSe and GaAs. First experiments on ultrathin nano-patterned CIGSe solar cells will be presented.
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Clément Colin ; Inès Massiot ; Andrea Cattoni ; Nicolas Vandamme ; Christophe Dupuis, et al.
Broadband light-trapping in ultra-thin nano-structured solar cells
", Proc. SPIE 8620, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices II, 86200C (March 25, 2013); doi:10.1117/12.2004269; http://dx.doi.org/10.1117/12.2004269