Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes
Autor(a) principal: | |
---|---|
Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1039/c9nr10601d http://hdl.handle.net/11449/201127 |
Resumo: | Organic diodes and molecular rectifiers are fundamental electronic devices that share one common feature: current rectification ability. Since both present distinct spatial dimensions and working principles, the rectification of organic diodes is usually achieved by interface engineering, while changes in molecular structures commonly control the molecular rectifiers' features. Here, we report on the first observation of temperature-driven inversion of the rectification direction (IRD) in ensemble molecular diodes (EMDs) prepared in a vertical stack configuration. The EMDs are composed of 20 nm thick molecular ensembles of copper phthalocyanine in close contact with one of its fluorinated derivatives. The material interface was found to be responsible for modifying the junction's conduction mechanisms from nearly activationless transport to Poole-Frenkel emission and phonon-assisted tunneling. In this context, the current rectification was found to be dependent on the interplay of such distinct charge transport mechanisms. The temperature has played a crucial role in each charge transport transition, which we have investigated via electrical measurements and band diagram analysis, thus providing the fundamentals on the IRD occurrence. Our findings represent an important step towards simple and rational control of rectification in carbon-based electronic nanodevices. |
id |
UNSP_03078041f464167fe9e0dc1767e06d42 |
---|---|
oai_identifier_str |
oai:repositorio.unesp.br:11449/201127 |
network_acronym_str |
UNSP |
network_name_str |
Repositório Institucional da UNESP |
repository_id_str |
2946 |
spelling |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodesOrganic diodes and molecular rectifiers are fundamental electronic devices that share one common feature: current rectification ability. Since both present distinct spatial dimensions and working principles, the rectification of organic diodes is usually achieved by interface engineering, while changes in molecular structures commonly control the molecular rectifiers' features. Here, we report on the first observation of temperature-driven inversion of the rectification direction (IRD) in ensemble molecular diodes (EMDs) prepared in a vertical stack configuration. The EMDs are composed of 20 nm thick molecular ensembles of copper phthalocyanine in close contact with one of its fluorinated derivatives. The material interface was found to be responsible for modifying the junction's conduction mechanisms from nearly activationless transport to Poole-Frenkel emission and phonon-assisted tunneling. In this context, the current rectification was found to be dependent on the interplay of such distinct charge transport mechanisms. The temperature has played a crucial role in each charge transport transition, which we have investigated via electrical measurements and band diagram analysis, thus providing the fundamentals on the IRD occurrence. Our findings represent an important step towards simple and rational control of rectification in carbon-based electronic nanodevices.Brazilian Nanotechnology National Laboratory (LNNano) Brazilian Center for Research in Energy and Materials (CNPEM)Brazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970, Campinas, São Paulo, Brazil and Postgraduate Program in Materials Science and Technology (POSMAT), São Paulo State University (UNESP), 17033-360, Bauru, SP, BrazilBrazilian Nanotechnology National Laboratory (LNNano), Brazilian Center for Research in Energy and Materials (CNPEM), 13083-970, Campinas, São Paulo, Brazil and Postgraduate Program in Materials Science and Technology (POSMAT), São Paulo State University (UNESP), 17033-360, Bauru, SP, Brazil and Department of Physical Chemistry, Institute of Chemistry (IQ), UNICAMP, 13084-862, Campinas, SP, Brazil. cesar.bof@lnnano.cnpem.brBrazilian Center for Research in Energy and Materials (CNPEM)Universidade Estadual Paulista (Unesp)Sergi Lopes, CarolinaMerces, Leandrode Oliveira, Rafael Furlande Camargo, Davi Henrique StarniniBof Bufon, Carlos César2020-12-12T02:24:44Z2020-12-12T02:24:44Z2020-05-14info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article10001-10009http://dx.doi.org/10.1039/c9nr10601dNanoscale, v. 12, n. 18, p. 10001-10009, 2020.2040-3372http://hdl.handle.net/11449/20112710.1039/c9nr10601d2-s2.0-85084694437Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengNanoscaleinfo:eu-repo/semantics/openAccess2021-10-23T16:08:27Zoai:repositorio.unesp.br:11449/201127Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T16:08:27Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
title |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
spellingShingle |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes Sergi Lopes, Carolina |
title_short |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
title_full |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
title_fullStr |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
title_full_unstemmed |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
title_sort |
Rectification ratio and direction controlled by temperature in copper phthalocyanine ensemble molecular diodes |
author |
Sergi Lopes, Carolina |
author_facet |
Sergi Lopes, Carolina Merces, Leandro de Oliveira, Rafael Furlan de Camargo, Davi Henrique Starnini Bof Bufon, Carlos César |
author_role |
author |
author2 |
Merces, Leandro de Oliveira, Rafael Furlan de Camargo, Davi Henrique Starnini Bof Bufon, Carlos César |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Brazilian Center for Research in Energy and Materials (CNPEM) Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Sergi Lopes, Carolina Merces, Leandro de Oliveira, Rafael Furlan de Camargo, Davi Henrique Starnini Bof Bufon, Carlos César |
description |
Organic diodes and molecular rectifiers are fundamental electronic devices that share one common feature: current rectification ability. Since both present distinct spatial dimensions and working principles, the rectification of organic diodes is usually achieved by interface engineering, while changes in molecular structures commonly control the molecular rectifiers' features. Here, we report on the first observation of temperature-driven inversion of the rectification direction (IRD) in ensemble molecular diodes (EMDs) prepared in a vertical stack configuration. The EMDs are composed of 20 nm thick molecular ensembles of copper phthalocyanine in close contact with one of its fluorinated derivatives. The material interface was found to be responsible for modifying the junction's conduction mechanisms from nearly activationless transport to Poole-Frenkel emission and phonon-assisted tunneling. In this context, the current rectification was found to be dependent on the interplay of such distinct charge transport mechanisms. The temperature has played a crucial role in each charge transport transition, which we have investigated via electrical measurements and band diagram analysis, thus providing the fundamentals on the IRD occurrence. Our findings represent an important step towards simple and rational control of rectification in carbon-based electronic nanodevices. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-12-12T02:24:44Z 2020-12-12T02:24:44Z 2020-05-14 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1039/c9nr10601d Nanoscale, v. 12, n. 18, p. 10001-10009, 2020. 2040-3372 http://hdl.handle.net/11449/201127 10.1039/c9nr10601d 2-s2.0-85084694437 |
url |
http://dx.doi.org/10.1039/c9nr10601d http://hdl.handle.net/11449/201127 |
identifier_str_mv |
Nanoscale, v. 12, n. 18, p. 10001-10009, 2020. 2040-3372 10.1039/c9nr10601d 2-s2.0-85084694437 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Nanoscale |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
10001-10009 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965669268127744 |