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11 May 2010 Enhancement of solar cell efficiency using two-dimensional photonic crystals
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During the last years, much attention has been paid to photonic crystals (PC) for different applications, but only recently they have been proposed and showed useful for applications in solar cells. Little work has been done in the actual manufacture and characterization of a complete solar cell with a two-dimensional photonic crystal (2D-PC) on its front surface, conceived as a periodic distribution of the dielectric constant in the plane (the surface of the solar cell) and involving sub-wavelength motifs. In this case, the photonic crystal effect is different from the one happening in slabs or suspended membranes. Despite the partial vertical confinement, there may be some reasons that can justify the use of photonic crystal front surface with sub-wavelength motifs. Experimental results on actual devices with a photonic crystal nanopatterned layer will be shown, along with reflectivity studies on PC lattices with different symmetries and shapes.
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P. A. Postigo, M. Kaldirim, I. Prieto, L. J. Martínez, M. L. Dotor, M. Galli, and L. C. Andreani "Enhancement of solar cell efficiency using two-dimensional photonic crystals", Proc. SPIE 7713, Photonic Crystal Materials and Devices IX, 771307 (11 May 2010);

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