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Article dans une revue

Surface quasi periodic and random structures based on nanomotor lithography for light trapping

Abstract : We compare the characteristics of two types of patterns obtained with two azopolymer materials: aGaussian random pattern and a quasi-random grating pattern. The surface structurations have beenobtained with a simple bottom-up technique, illuminating azopolymer thin films with a single laserbeam. We demonstrate the interesting generated properties of these two surfaces. In particular, thesurface with quasi-random gratings can address beam splitting for light coupling in different direc-tions in an ultra-thin film. We use these two surfaces as a mold and replicate them on a transparentelastomeric material and demonstrate a very good light entrapment. We also show that the efficiencyof light trapping is 20% better with the quasi-random gratings, than with the Gaussian random sur-face, and is close to 40%.Published by AIP Publishing.
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https://hal.univ-angers.fr/hal-02885280
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Soumis le : mardi 30 juin 2020 - 15:26:40
Dernière modification le : vendredi 17 juillet 2020 - 12:36:03

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Sh. Golghasemi Sorkhabi, S. Ahmadi-Kandjani, F. Cousseau, M. Loumaigne, S. Zielinska, et al.. Surface quasi periodic and random structures based on nanomotor lithography for light trapping. Journal of Applied Physics, American Institute of Physics, 2017, 122 (1), pp.015303. ⟨10.1063/1.4991480⟩. ⟨hal-02885280⟩

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