8 March 2014 Comparison of bioinspired hillock and pit textures for silicon solar cells
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Abstract
Inspired by the apposition compound eyes of some dipterans, we analyzed the effect of texturing the exposed face of a silicon solar cell by ray-tracing simulation. Bioinspired textures of two types were considered: hillock textures and pit textures. A multifrequency analysis-that took into account the broadband nature of solar radiation and its amplitude at the sea-level, as well as the wavelength dependence of the complex-valued refractive index of silicon-showed that both types of bioinspired textures are beneficial. We found that the light-coupling efficiency can be enhanced by as much as 20% and 24% with respect to that of a flat surface when the exposed face of a silicon solar cell is decorated with the bioinspired hillock texture and the bioinspired pit texture, respectively.
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Francesco Chiadini, Francesco Chiadini, Vincenzo Fiumara, Vincenzo Fiumara, Antonio Scaglione, Antonio Scaglione, Akhlesh Lakhtakia, Akhlesh Lakhtakia, } "Comparison of bioinspired hillock and pit textures for silicon solar cells", Proc. SPIE 9055, Bioinspiration, Biomimetics, and Bioreplication 2014, 90550T (8 March 2014); doi: 10.1117/12.2041742; https://doi.org/10.1117/12.2041742
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