Inverse funnel effect of excitons in strained black phosphorus

We study the effects of strain on the properties and dynamics of Wannier excitons in monolayer (phosphorene) and few-layer black phosphorus (BP), a promising two-dimensional material for optoelectronic applications due to its high mobility, mechanical strength, and strain-tunable direct band gap. We...

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Detalles Bibliográficos
Autores: San-José, Pablo, Parente, Vincenzo, Guinea, Francisco, Roldán, Rafael, Prada, Elsa
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2016
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/186975
Acceso en línea:http://hdl.handle.net/10261/186975
Access Level:acceso abierto
Palabra clave:Condensed Matter Physics
Optoelectronics
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spelling Inverse funnel effect of excitons in strained black phosphorusSan-José, PabloParente, VincenzoGuinea, FranciscoRoldán, RafaelPrada, ElsaCondensed Matter PhysicsOptoelectronicsWe study the effects of strain on the properties and dynamics of Wannier excitons in monolayer (phosphorene) and few-layer black phosphorus (BP), a promising two-dimensional material for optoelectronic applications due to its high mobility, mechanical strength, and strain-tunable direct band gap. We compare the results to the case of molybdenum disulphide (MoS) monolayers. We find that the so-called funnel effect, i.e., the possibility of controlling exciton motion by means of inhomogeneous strains, is much stronger in few-layer BP than in MoS monolayers and, crucially, is of opposite sign. Instead of excitons accumulating isotropically around regions of high tensile strain like in MoS, excitons in BP are pushed away from said regions. This inverse funnel effect is moreover highly anisotropic, with much larger funnel distances along the armchair crystallographic direction, leading to a directional focusing of exciton flow. A strong inverse funnel effect could enable simpler designs of funnel solar cells and offer new possibilities for the manipulation and harvesting of light.We acknowledge financial support from MINECO (Spain) through the Ramón y Cajal Programs No. RYC-2013-14645 and No. RYC-2011-09345, and Grants No. FIS2011-23713, No. FIS2013-47328-C2-1-P, No. FIS2014-58445-JIN, and No. FIS2014-57432, and The María de Maeztu Programme for Units of Excellence in R&D (MDM-2014-0377), as well as from the Comunidad Autónoma de Madrid (CAM) MAD2D-CM Program (S2013/MIT-3007), the European Commission under the Graphene Flagship, Contract No. CNECTICT-604391, and the European Research Council, through Grant No. 290846.Peer reviewedAmerican Physical SocietyMinisterio de Economía y Competitividad (España)Comunidad de MadridEuropean CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2019201920162019info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionhttp://hdl.handle.net/10261/186975reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE##PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC-2013-14645info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2013-47328-C2-1-Pinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2014-57432info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2014-58445-JINinfo:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MDM-2014-0377S2013/MIT-3007/MAD2D-CMinfo:eu-repo/grantAgreement/EC/FP7/604391info:eu-repo/grantAgreement/EC/FP7/290846https://doi.org/10.1103/PhysRevX.6.031046Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/1869752026-05-22T06:33:51Z
dc.title.none.fl_str_mv Inverse funnel effect of excitons in strained black phosphorus
title Inverse funnel effect of excitons in strained black phosphorus
spellingShingle Inverse funnel effect of excitons in strained black phosphorus
San-José, Pablo
Condensed Matter Physics
Optoelectronics
title_short Inverse funnel effect of excitons in strained black phosphorus
title_full Inverse funnel effect of excitons in strained black phosphorus
title_fullStr Inverse funnel effect of excitons in strained black phosphorus
title_full_unstemmed Inverse funnel effect of excitons in strained black phosphorus
title_sort Inverse funnel effect of excitons in strained black phosphorus
dc.creator.none.fl_str_mv San-José, Pablo
Parente, Vincenzo
Guinea, Francisco
Roldán, Rafael
Prada, Elsa
author San-José, Pablo
author_facet San-José, Pablo
Parente, Vincenzo
Guinea, Francisco
Roldán, Rafael
Prada, Elsa
author_role author
author2 Parente, Vincenzo
Guinea, Francisco
Roldán, Rafael
Prada, Elsa
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Comunidad de Madrid
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Condensed Matter Physics
Optoelectronics
topic Condensed Matter Physics
Optoelectronics
description We study the effects of strain on the properties and dynamics of Wannier excitons in monolayer (phosphorene) and few-layer black phosphorus (BP), a promising two-dimensional material for optoelectronic applications due to its high mobility, mechanical strength, and strain-tunable direct band gap. We compare the results to the case of molybdenum disulphide (MoS) monolayers. We find that the so-called funnel effect, i.e., the possibility of controlling exciton motion by means of inhomogeneous strains, is much stronger in few-layer BP than in MoS monolayers and, crucially, is of opposite sign. Instead of excitons accumulating isotropically around regions of high tensile strain like in MoS, excitons in BP are pushed away from said regions. This inverse funnel effect is moreover highly anisotropic, with much larger funnel distances along the armchair crystallographic direction, leading to a directional focusing of exciton flow. A strong inverse funnel effect could enable simpler designs of funnel solar cells and offer new possibilities for the manipulation and harvesting of light.
publishDate 2016
dc.date.none.fl_str_mv 2016
2019
2019
2019
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
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info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/186975
url http://hdl.handle.net/10261/186975
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
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info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/RYC-2013-14645
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2013-47328-C2-1-P
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2014-57432
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/FIS2014-58445-JIN
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/MDM-2014-0377
S2013/MIT-3007/MAD2D-CM
info:eu-repo/grantAgreement/EC/FP7/604391
info:eu-repo/grantAgreement/EC/FP7/290846
https://doi.org/10.1103/PhysRevX.6.031046
Sí
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
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