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Analysis and fabrication of antireflective coating for photovoltaics based on a photonic-crystal concept and generated by evolutionary optimization

Abstract : We optimize multilayered anti-reflective coatings for photovoltaic devices, using modern evolutionary algorithms. We apply a rigorous methodology to show that a given structure, which is particularly regular (i.e. essentially periodic), emerges spontaneously and systematically for a very broad range of conditions. The very regularity of the structure allows for a thorough physical analysis of how the design operates. This allows to understand that the central part is a photonic crystal utilized as a buffer for light, and that the external layers have the purpose of reducing the impedance mismatch between the outer media and the Bloch mode supported by the photonic crystal. This shows how optimization can suggest new design rules and be considered as a source of inspiration. Finally, we fabricate these structures with easily deployable techniques.
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https://hal.uca.fr/hal-03172152
Contributor : Pauline Bennet <>
Submitted on : Wednesday, March 17, 2021 - 3:07:19 PM
Last modification on : Friday, May 28, 2021 - 8:54:12 AM
Long-term archiving on: : Monday, June 21, 2021 - 8:54:37 AM

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Distributed under a Creative Commons Attribution 4.0 International License

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Pauline Bennet, Perrine Juillet, Sara Ibrahim, Vincent Berthier, Mamadou Barry, et al.. Analysis and fabrication of antireflective coating for photovoltaics based on a photonic-crystal concept and generated by evolutionary optimization. Physical Review B, American Physical Society, 2021, 103 (12), ⟨10.1103/PhysRevB.103.125135⟩. ⟨hal-03172152⟩

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