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dc.contributor.authorGarcía-Rosell, Manuel
dc.contributor.authorBou, Agustín
dc.contributor.authorJiménez Tejada, Juan Antonio
dc.contributor.authorBisquert, Juan
dc.contributor.authorLopez-Varo, Pilar
dc.date.accessioned2019-02-04T10:52:05Z
dc.date.available2019-02-04T10:52:05Z
dc.date.issued2018-03
dc.identifier.citationGARCÍA-ROSELL, Manuel, et al. Analysis of the Influence of Selective Contact Heterojunctions on the Performance of Perovskite Solar Cells. J. Phys. Chem. C, 2018, 122, 25, 13920-13925ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/180603
dc.description.abstractKnowledge of the mechanisms that take place at the selective contacts, located at the charge-transport-layer (CTL)/perovskite heterojunctions, is crucial for the optimization of perovskite solar cells. Anomalous high values of the low-frequency capacitance at open-circuit and short-circuit indicate a high accumulation of charge at the interfaces, which could hinder the extraction of charge and increase hysteresis in current-voltage curve. To investigate this issue, we develop a simulation model based on the drift diffusion differential equations with specific boundary conditions at the interfaces. We have simulated the CTL/perovskite structures as part of the entire perovskite solar cell, in order to establish the realistic energy profile across the interface. The energy profile allows to detect in which situations free charge accumulation at the interfaces exists, and to quantify this accumulation as a function of the device and material parameters. We discuss the role and the importance of each CTL/perovskite interface at open-circuit and short-circuit. We conclude that the accumulation of charge at the interfaces is strongly affected by the specific contact materials, and critically depends on a compromise between the presence of ions, the values of the carrier mobility, and the interfacial and bulk recombination parameters.ca_CA
dc.format.extent16 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherACSca_CA
dc.rightsCopyright © 2018 American Chemical Societyca_CA
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/*
dc.subjectperovskite solar cellsca_CA
dc.subjectheterojunctionsca_CA
dc.subjectboundary conditionsca_CA
dc.subjectcapacitanceca_CA
dc.subjectcarrier mobilityca_CA
dc.subjectselective contactsca_CA
dc.subjectspecific contactca_CA
dc.titleAnalysis of the Influence of Selective Contact Heterojunctions on the Performance of Perovskite Solar Cellsca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1021/acs.jpcc.8b01070
dc.relation.projectIDMINECO of Spain (Project MAT2016-76892-C3- 1-R, MAT2016-76892-C3-3-R) ; Universidad de Granada (Grant Contrato Puente).ca_CA
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttps://pubs.acs.org/doi/abs/10.1021/acs.jpcc.8b01070ca_CA
dc.type.versioninfo:eu-repo/semantics/submittedVersionca_CA


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