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dc.contributor.authorMacias-Pinilla, David F.
dc.contributor.authorPlanelles, Josep
dc.contributor.authorMora-Sero, Ivan
dc.contributor.authorClimente, Juan I.
dc.date.accessioned2021-09-15T07:08:11Z
dc.date.available2021-09-15T07:08:11Z
dc.date.issued2021-07-07
dc.identifier.citationDavid F. Macias-Pinilla, Josep Planelles, Iván Mora-Seró, and Juan I. Climente The Journal of Physical Chemistry C 2021 125 (28), 15614-15622 DOI: 10.1021/acs.jpcc.1c03880ca_CA
dc.identifier.issn1932-7447
dc.identifier.issn1932-7455
dc.identifier.urihttp://hdl.handle.net/10234/194711
dc.description.abstractThe optoelectronic properties of metal chalcogenide colloidal nanoplatelets are often interpreted in terms of excitonic states. However, recent spectroscopic experiments evidence the presence of trion states, enabled by the slow Auger recombination in these structures. We analyze how the presence of an additional charge in trions modifies the emission energy and oscillator strength as compared to neutral excitons. These properties are very sensitive to dielectric confinement and electronic correlations, which we describe accurately using the image-charge and variational Quantum Monte Carlo methods in effective mass Hamiltonians. We observe that the giant oscillator strength of neutral excitons is largely suppressed in trions. Both negative and positive trions are red-shifted with respect to the exciton, and their emission energy increases with increasing dielectric mismatch between the platelet and its surroundings, which is a consequence of the self-energy potential. Our results are consistent with experiments in the literature and assess the validity of previous theoretical approximations.ca_CA
dc.format.extent27 p.ca_CA
dc.format.mimetypeapplication/pdfca_CA
dc.language.isoengca_CA
dc.publisherAmerican Chemical Societyca_CA
dc.relation.isPartOfJ. Phys. Chem. C 2021, 125, 15614−15622ca_CA
dc.rightsCopyright © 2021 American Chemical Societyca_CA
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/ca_CA
dc.subjectexcitonsca_CA
dc.subjectbinding energyca_CA
dc.subjectinsulatorsca_CA
dc.subjectquantum confinementca_CA
dc.subjectcadmium selenideca_CA
dc.titleComparison between Trion and Exciton Electronic Properties in CdSe and PbS Nanoplateletsca_CA
dc.typeinfo:eu-repo/semantics/articleca_CA
dc.identifier.doihttps://doi.org/10.1021/acs.jpcc.1c03880
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessca_CA
dc.relation.publisherVersionhttps://pubs.acs.org/journal/jpccckca_CA
dc.type.versioninfo:eu-repo/semantics/acceptedVersionca_CA
project.funder.nameMinisterio de Asuntos Económicos y Transformación Digitalca_CA
project.funder.nameEuropean Research Council (ERC)ca_CA
project.funder.nameGeneralitat Valencianaca_CA
oaire.awardNumberCTQ2017-83781-P (J.P., J.I.C.)ca_CA
oaire.awardNumber724424-No-LIMIT (D.F.M.-P., I.M.-S.)ca_CA
oaire.awardNumberPrometeo/2018/098ca_CA


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