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Path length enhancement in disordered media for increased absorption

hal.structure.identifierIstituto Italiano di Tecnologia [IIT]
dc.contributor.authorMUPPARAPU, Rajeshkumar
hal.structure.identifierLaboratoire Photonique, Numérique et Nanosciences [LP2N]
dc.contributor.authorVYNCK, Kevin
dc.contributor.authorSVENSSON, Tomas
hal.structure.identifierIstituto Nazionale di Ottica [INO]
dc.contributor.authorBURRESI, Matteo
hal.structure.identifierUniversità degli Studi di Firenze = University of Florence = Université de Florence [UniFI]
dc.contributor.authorWIERSMA, Diederik S.
dc.date.accessioned2023-05-12T10:59:35Z
dc.date.available2023-05-12T10:59:35Z
dc.date.issued2015-10-08
dc.identifier.issn1094-4087
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/182007
dc.description.abstractEnWe theoretically and numerically investigate the capabilityof disordered media to enhance the optical path length in dielectric slabsand augment their light absorption efficiency due to scattering. We firstperform a series of Monte Carlo simulations of random walks to determinethe path length distribution in weakly to strongly (single to multiple)scattering, non-absorbing dielectric slabs under normally incident lightand derive analytical expressions for the path length enhancement in thesetwo limits. Quite interestingly, while multiple scattering is expected toproduce long optical paths, we find that media containing a vanishinglysmall amount of scatterers can still provide high path length enhancementsdue to the very long trajectories sustained by total internal reflection at theslab interfaces. The path length distributions are then used to calculate thelight absorption efficiency of media with varying absorption coefficients.We find that maximum absorption enhancement is obtained at an optimalscattering strength, in-between the single-scattering and the diffusive(strong multiple-scattering) regimes. This study can guide experimentaliststowards more efficient and potentially low-cost solutions in photovoltaictechnologies.
dc.language.isoen
dc.publisherOptical Society of America - OSA Publishing
dc.title.enPath length enhancement in disordered media for increased absorption
dc.typeArticle de revue
dc.identifier.doi10.1364/OE.23.0A1472
dc.subject.halPhysique [physics]/Physique [physics]/Optique [physics.optics]
dc.identifier.arxiv1507.03484
dc.description.sponsorshipEuropeNanophotonics for Energy Efficiency
dc.description.sponsorshipEuropeNano Photonics-Based Micro Robotics
bordeaux.journalOptics Express
bordeaux.pageA1472-A1484
bordeaux.volume23
bordeaux.hal.laboratoriesLaboratoire Photonique, Numérique et Nanosciences (LP2N) - UMR 5298*
bordeaux.issue24
bordeaux.institutionUniversité de Bordeaux
bordeaux.institutionCNRS
bordeaux.peerReviewedoui
hal.identifierhal-01213980
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01213980v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Optics%20Express&rft.date=2015-10-08&rft.volume=23&rft.issue=24&rft.spage=A1472-A1484&rft.epage=A1472-A1484&rft.eissn=1094-4087&rft.issn=1094-4087&rft.au=MUPPARAPU,%20Rajeshkumar&VYNCK,%20Kevin&SVENSSON,%20Tomas&BURRESI,%20Matteo&WIERSMA,%20Diederik%20S.&rft.genre=article


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