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dc.creatorGálvez López, Francisco Enriquees
dc.creatorBarnes, Piers R. F.es
dc.creatorHalme, Jannees
dc.creatorMíguez García, Hernán Ruyes
dc.date.accessioned2018-01-04T14:45:04Z
dc.date.available2018-01-04T14:45:04Z
dc.date.issued2014
dc.identifier.citationGálvez López, F.E., Barnes, P.R.F., Halme, J. y Míguez, H. (2014). Dye sensitized solar cells as optically random photovoltaic media. Energy and Environmental Sciences, 7, 689-697.
dc.identifier.issn1754-5692es
dc.identifier.urihttp://hdl.handle.net/11441/68322
dc.description.abstractn order to enhance optical absorption, light trapping by multiple scattering is commonly achieved in dye sensitized solar cells by adding particles of a different sort. Herein we propose a theoretical method to find the structural parameters (particle number density and size) that optimize the conversion efficiency of electrodes of different thicknesses containing spherical inclusions of diverse composition. Our work provides a theoretical framework in which the response of solar cells containing diffuse scattering particles can be rationalized. Optical simulations are performed by combining a Monte Carlo approach with Mie theory, in which the angular distribution of scattered light is accounted for. Several types of scattering centers, such as anatase, gold and silver particles, as well as cavities, are considered and their effect compared. Estimates of photovoltaic performance, insight into the physical mechanisms responsible for the observed enhancements, and guidelines to improve the cell design are provided. We discuss the results in terms of light transport in weakly disordered optical media and find that the observed variations between the optimum scattering configurations attained for different electrode thicknesses can be understood as the result of the randomization of the light propagation direction at different depths within the active layer. A primary conclusion of our study is that photovoltaic performance is optimised when the scattering properties of the film are adjusted so that the distance over which incident photons are randomized is comparable to the thickness of the film. This simple relationship could also be used as a design rule to attain the optimum optical design in other photovoltaic materials.es
dc.description.sponsorshipEuropean Union 307081es
dc.description.sponsorshipMinisterio de Economía y Competitividad MAT2011-23593, CSD2007-00007es
dc.description.sponsorshipJunta de Andalucía FQM3579, FQM5247es
dc.formatapplication/pdfes
dc.language.isoenges
dc.publisherRoyal Society of Chemistry (Great Britain)es
dc.relation.ispartofEnergy and Environmental Sciences, 7, 689-697.
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internacional*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/*
dc.titleDye sensitized solar cells as optically random photovoltaic mediaes
dc.typeinfo:eu-repo/semantics/articlees
dc.type.versioninfo:eu-repo/semantics/publishedVersiones
dc.rights.accessrightsinfo:eu-repo/semantics/openAccesses
dc.relation.projectID307081es
dc.relation.projectIDMAT2011-23593es
dc.relation.projectIDCSD2007-00007es
dc.relation.projectIDFQM3579es
dc.relation.projectIDFQM5247es
dc.relation.publisherversionhttp://dx.doi.org/10.1039/c3ee42587hes
dc.identifier.doi10.1039/c3ee42587hes
idus.format.extent9 p.es
dc.journaltitleEnergy and Environmental Scienceses
dc.publication.volumen7es
dc.publication.initialPage689es
dc.publication.endPage697es

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