Mesoscopic modelling of 2-CN-PPV/PPV polymer LED

Detalhes bibliográficos
Autor(a) principal: Barbosa, Helder M. C.
Data de Publicação: 2007
Outros Autores: Ramos, Marta M. D.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/6917
Resumo: Although optoelectronic devices made of polymers are very attractive ones (low cost, easy to make), problems related to charge transport, exciton quenching, among others, can be an obstacle for their performance. The use of heterojunctions made of two polymers can be a strategy for improving the efficiency of polymer light emitting diodes (PLEDs) at low bias. Here we present a theoretical study of the influence of bilayer structure in a PLED made of PPV and 2-CN-PPV, by adopting a mesoscopic approach. Our results show that the presence of the polymer/polymer interface improves charge injection and leads to a confinement of charges near it, which will increase the number recombination events in the middle of the device compared to the equivalent single-layer PLEDs.
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spelling Mesoscopic modelling of 2-CN-PPV/PPV polymer LEDScience & TechnologyAlthough optoelectronic devices made of polymers are very attractive ones (low cost, easy to make), problems related to charge transport, exciton quenching, among others, can be an obstacle for their performance. The use of heterojunctions made of two polymers can be a strategy for improving the efficiency of polymer light emitting diodes (PLEDs) at low bias. Here we present a theoretical study of the influence of bilayer structure in a PLED made of PPV and 2-CN-PPV, by adopting a mesoscopic approach. Our results show that the presence of the polymer/polymer interface improves charge injection and leads to a confinement of charges near it, which will increase the number recombination events in the middle of the device compared to the equivalent single-layer PLEDs.Fundação para a Ciência e a Tecnologia (FCT) Programa Operacional “Ciência , Tecnologia, Inovação” POCTI/CTM/41574/2001, CONC-REEQ/443/EEI/2001 e SFRH/BD/22143/2005SpringerUniversidade do MinhoBarbosa, Helder M. C.Ramos, Marta M. D.2007-102007-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/6917eng"Journal of materials science : materials in electronics". ISSN 0957-4522. 18:10 (Oct. 2007) p. S257-S261.0957-452210.1007/s10854-007-9191-yinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2023-07-21T12:03:35Zoai:repositorium.sdum.uminho.pt:1822/6917Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T18:53:44.775410Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
title Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
spellingShingle Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
Barbosa, Helder M. C.
Science & Technology
title_short Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
title_full Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
title_fullStr Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
title_full_unstemmed Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
title_sort Mesoscopic modelling of 2-CN-PPV/PPV polymer LED
author Barbosa, Helder M. C.
author_facet Barbosa, Helder M. C.
Ramos, Marta M. D.
author_role author
author2 Ramos, Marta M. D.
author2_role author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Barbosa, Helder M. C.
Ramos, Marta M. D.
dc.subject.por.fl_str_mv Science & Technology
topic Science & Technology
description Although optoelectronic devices made of polymers are very attractive ones (low cost, easy to make), problems related to charge transport, exciton quenching, among others, can be an obstacle for their performance. The use of heterojunctions made of two polymers can be a strategy for improving the efficiency of polymer light emitting diodes (PLEDs) at low bias. Here we present a theoretical study of the influence of bilayer structure in a PLED made of PPV and 2-CN-PPV, by adopting a mesoscopic approach. Our results show that the presence of the polymer/polymer interface improves charge injection and leads to a confinement of charges near it, which will increase the number recombination events in the middle of the device compared to the equivalent single-layer PLEDs.
publishDate 2007
dc.date.none.fl_str_mv 2007-10
2007-10-01T00:00:00Z
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://hdl.handle.net/1822/6917
url http://hdl.handle.net/1822/6917
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv "Journal of materials science : materials in electronics". ISSN 0957-4522. 18:10 (Oct. 2007) p. S257-S261.
0957-4522
10.1007/s10854-007-9191-y
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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