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dc.contributor.authorChulia-Jordan, Raquel
dc.contributor.authorMas, Elena
dc.contributor.authorSegura, Alfredo
dc.contributor.authorBisquert, Juan
dc.contributor.authorMartínez-Pastor, Juan P.
dc.date.accessioned2019-03-01T10:26:37Z
dc.date.available2019-03-01T10:26:37Z
dc.date.issued2018-09
dc.identifier.citationCHULIA-JORDAN, Raquel, et al. Crystalline-Size Dependence of Dual Emission Peak on Hybrid Organic Lead-Iodide Perovskite Films at Low Temperatures. The Journal of Physical Chemistry C, 2018, 122.39: 22717-22727.ca_CA
dc.identifier.urihttp://hdl.handle.net/10234/181615
dc.description.abstractIn this work, we have investigated the crystalline-size dependence of optical absorption and photoluminescence emission of CH3NH3PbI3 films, which is necessary to identify the potential practical applications of the gadgets based on perovskite films. This study was carried out at low temperatures to minimize the extra complexity induced by thermal effects. The purpose was to clarify the origin of the dual emission peak previously reported in the literature. We found that the grain size is responsible for the appearance or disappearance of this dual emission on CH3NH3PbI3 at low temperatures, whereas we have inferred that the thickness of the perovskite layer is a much more important factor than the size of the grains in the location of the energy of the band gap. Moreover, the increase in the grain size allows slowing down the phase transition. Additionally, we evidence a decrease in the effective Rydberg energy of the exciton in several samples, from 23–25 meV at 7 K to 12–13 meV at 165 K, by fitting to Elliott–Toyozawa theory. We have extracted other important physical parameters of perovskites from the photoluminescence-data deconvolution, such as the band gap, exciton–phonon interaction, and exciton binding energy. A new phase transition at 45.5 K was determined by the temperature dependence of full width at half-maximum and the integrated intensity of the photoluminescence, and it was confirmed by the radiative lifetime obtained from the time-resolved photoluminescence emission by means of time-correlated single-photon counting at different temperatures, excitation fluencies, and emission energies.ca_CA
dc.format.extent10 p.ca_CA
dc.format.mimetypeapplication/mswordca_CA
dc.language.isoengca_CA
dc.publisherAmerican Chemical Societyca_CA
dc.rightsCopyright © 2018 American Chemical Societyca_CA
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/*
dc.subjectperovskiteca_CA
dc.subjectsolar cellsca_CA
dc.subjecttemperature dependenceca_CA
dc.subjectbinding energyca_CA
dc.subjectcrystalline materialsca_CA
dc.subjectenergy gapca_CA
dc.subjectexcitonsca_CA
dc.subjectgrain size and shapeca_CA
dc.subjectiodine compoundsca_CA
dc.subjectlayered semiconductorsca_CA
dc.subjectlight absorptionca_CA
dc.subjectparticle beamsca_CA
dc.subjectphotoluminescenceca_CA
dc.subjectsemiconductor quantum wellsca_CA
dc.titleCrystalline-Size Dependence of Dual Emission Peak on Hybrid Organic Lead-Iodide Perovskite Films at Low Temperaturesca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttp://dx.doi.org/10.1021/acs.jpcc.8b06770
dc.relation.projectIDEuropean Union’s Horizon 2020 research and innovation programme Marie Sklodowska-Curie (grant agreement no. 704998 (R.C.J.)) ; Ministerio de Economía y Competitividad (MINECO) from Spain (projectsMAT2013-47192-C3-1-R, TEC2014-53727-C2-1-R and TEC2017-86102-02-1-R)ca_CA
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttps://pubs.acs.org/doi/abs/10.1021/acs.jpcc.8b06770ca_CA
dc.date.embargoEndDate2019-09-10
dc.type.versioninfo:eu-repo/semantics/acceptedVersionca_CA


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