%0 Journal Article %T Analysis and fabrication of antireflective coating for photovoltaics based on a photonic-crystal concept and generated by evolutionary optimization %+ Institut Pascal (IP) %+ Institut de Chimie de Clermont-Ferrand (ICCF) %+ Laboratoire de Recherche informatique - Badji Mokhtar University (LRI ) %+ Facebook AI Research [Paris] (FAIR) %A Bennet, Pauline %A Juillet, Perrine %A Ibrahim, Sara %A Berthier, Vincent %A Barry, Mamadou, Aliou %A Réveret, François %A Bousquet, Angélique %A Teytaud, Olivier %A Centeno, Emmanuel %A Moreau, Antoine %< avec comité de lecture %@ 2469-9950 %J Physical Review B %I American Physical Society %V 103 %N 12 %8 2021-03-16 %D 2021 %R 10.1103/PhysRevB.103.125135 %K Optimization problems %K Photonic crystals %K Photonics %K Photovoltaic effect %Z Engineering Sciences [physics]/Optics / Photonic %Z Physics [physics]/Physics [physics]/Optics [physics.optics]Journal articles %X 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. %G English %2 https://uca.hal.science/hal-03172152/document %2 https://uca.hal.science/hal-03172152/file/PhysRevB.103.125135.pdf %L hal-03172152 %U https://uca.hal.science/hal-03172152 %~ PRES_CLERMONT %~ CNRS %~ UNIV-BPCLERMONT %~ ICC %~ INSTITUT_PASCAL %~ ACL-SF %~ ACL-SPI %~ INC-CNRS %~ TEST-HALCNRS %~ CLERMONT-AUVERGNE-INP %~ TEST2-HALCNRS %~ TEST3-HALCNRS