Mostrar el registro sencillo del ítem
Comparison between Trion and Exciton Electronic Properties in CdSe and PbS Nanoplatelets
dc.contributor.author | Macias-Pinilla, David F. | |
dc.contributor.author | Planelles, Josep | |
dc.contributor.author | Mora-Sero, Ivan | |
dc.contributor.author | Climente, Juan I. | |
dc.date.accessioned | 2021-09-15T07:08:11Z | |
dc.date.available | 2021-09-15T07:08:11Z | |
dc.date.issued | 2021-07-07 | |
dc.identifier.citation | David 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.1c03880 | ca_CA |
dc.identifier.issn | 1932-7447 | |
dc.identifier.issn | 1932-7455 | |
dc.identifier.uri | http://hdl.handle.net/10234/194711 | |
dc.description.abstract | The 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.extent | 27 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Chemical Society | ca_CA |
dc.relation.isPartOf | J. Phys. Chem. C 2021, 125, 15614−15622 | ca_CA |
dc.rights | Copyright © 2021 American Chemical Society | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | ca_CA |
dc.subject | excitons | ca_CA |
dc.subject | binding energy | ca_CA |
dc.subject | insulators | ca_CA |
dc.subject | quantum confinement | ca_CA |
dc.subject | cadmium selenide | ca_CA |
dc.title | Comparison between Trion and Exciton Electronic Properties in CdSe and PbS Nanoplatelets | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | https://doi.org/10.1021/acs.jpcc.1c03880 | |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | ca_CA |
dc.relation.publisherVersion | https://pubs.acs.org/journal/jpccck | ca_CA |
dc.type.version | info:eu-repo/semantics/acceptedVersion | ca_CA |
project.funder.name | Ministerio de Asuntos Económicos y Transformación Digital | ca_CA |
project.funder.name | European Research Council (ERC) | ca_CA |
project.funder.name | Generalitat Valenciana | ca_CA |
oaire.awardNumber | CTQ2017-83781-P (J.P., J.I.C.) | ca_CA |
oaire.awardNumber | 724424-No-LIMIT (D.F.M.-P., I.M.-S.) | ca_CA |
oaire.awardNumber | Prometeo/2018/098 | ca_CA |
Ficheros en el ítem
Este ítem aparece en la(s) siguiente(s) colección(ones)
-
QFA_Articles [821]
Articles de publicacions periòdiques -
INAM_Articles [521]