High rectification in organic diodes based on liquid crystalline phthalocyanines.
Autor(a) principal: | |
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Data de Publicação: | 2015 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UFOP |
Texto Completo: | http://www.repositorio.ufop.br/handle/123456789/7192 http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=search |
Resumo: | The optical and electrical properties of mesogenic metal-free and metalated phthalocyanines (PCs) with a moderately sized and regioregular alkyl periphery were investigated. In solution, the individualized molecules show fluorescence lifetimes of 4–6 ns in THF. When deposited as solid thin films the materials exhibit significantly shorter fluorescence lifetimes with bi-exponential decay (1.4–1.8 ns; 0.2–0.4 ns) that testify to the formation of aggregates via p–p intermolecular interactions. In diode structures, their pronounced columnar order outbalances the unfavorable planar alignment and leads to excellent rectification behavior. Field-dependent charge carrier mobilities are obtained from the J–V curves in the trap-limited space-charge-limited current regime and demonstrate that the metalated PCs display an improved electrical response with respect to the metal-free homologue. The excited-state lifetime characterization suggest that the p–p intermolecular interactions are stronger for the metal-free PC, confirming that the metallic centre plays an important role in the charge transport inside these materials. |
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Apostol, PetruEccher, JulianaDotto, Marta Elisa RossoCosta, Cassiano BatesttinCazati, ThiagoHillard, Elizabeth A.Bock, HaraldBechtold, Ivan Helmuth2017-02-01T13:42:05Z2017-02-01T13:42:05Z2015APOSTOL, P. et al. High rectification in organic diodes based on liquid crystalline phthalocyanines. Physical Chemistry Chemical Physics, v. 17, p. 32390-32397, 2015. Disponível em: <http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=search>. Acesso em: 23 jan. 2017.14639076http://www.repositorio.ufop.br/handle/123456789/7192http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=searchThe optical and electrical properties of mesogenic metal-free and metalated phthalocyanines (PCs) with a moderately sized and regioregular alkyl periphery were investigated. In solution, the individualized molecules show fluorescence lifetimes of 4–6 ns in THF. When deposited as solid thin films the materials exhibit significantly shorter fluorescence lifetimes with bi-exponential decay (1.4–1.8 ns; 0.2–0.4 ns) that testify to the formation of aggregates via p–p intermolecular interactions. In diode structures, their pronounced columnar order outbalances the unfavorable planar alignment and leads to excellent rectification behavior. Field-dependent charge carrier mobilities are obtained from the J–V curves in the trap-limited space-charge-limited current regime and demonstrate that the metalated PCs display an improved electrical response with respect to the metal-free homologue. The excited-state lifetime characterization suggest that the p–p intermolecular interactions are stronger for the metal-free PC, confirming that the metallic centre plays an important role in the charge transport inside these materials.High rectification in organic diodes based on liquid crystalline phthalocyanines.info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleinfo:eu-repo/semantics/openAccessengreponame:Repositório Institucional da UFOPinstname:Universidade Federal de Ouro Preto (UFOP)instacron:UFOPLICENSElicense.txtlicense.txttext/plain; charset=utf-8924http://www.repositorio.ufop.br/bitstream/123456789/7192/2/license.txt62604f8d955274beb56c80ce1ee5dcaeMD52ORIGINALARTIGO_HighRectificationOrganic.pdfARTIGO_HighRectificationOrganic.pdfapplication/pdf2484383http://www.repositorio.ufop.br/bitstream/123456789/7192/1/ARTIGO_HighRectificationOrganic.pdf314d26ec3841a781578d9c21fa6b91ecMD51123456789/71922021-02-11 11:43:09.092oai:localhost: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ório InstitucionalPUBhttp://www.repositorio.ufop.br/oai/requestrepositorio@ufop.edu.bropendoar:32332021-02-11T16:43:09Repositório Institucional da UFOP - Universidade Federal de Ouro Preto (UFOP)false |
dc.title.pt_BR.fl_str_mv |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
title |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
spellingShingle |
High rectification in organic diodes based on liquid crystalline phthalocyanines. Apostol, Petru |
title_short |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
title_full |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
title_fullStr |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
title_full_unstemmed |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
title_sort |
High rectification in organic diodes based on liquid crystalline phthalocyanines. |
author |
Apostol, Petru |
author_facet |
Apostol, Petru Eccher, Juliana Dotto, Marta Elisa Rosso Costa, Cassiano Batesttin Cazati, Thiago Hillard, Elizabeth A. Bock, Harald Bechtold, Ivan Helmuth |
author_role |
author |
author2 |
Eccher, Juliana Dotto, Marta Elisa Rosso Costa, Cassiano Batesttin Cazati, Thiago Hillard, Elizabeth A. Bock, Harald Bechtold, Ivan Helmuth |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Apostol, Petru Eccher, Juliana Dotto, Marta Elisa Rosso Costa, Cassiano Batesttin Cazati, Thiago Hillard, Elizabeth A. Bock, Harald Bechtold, Ivan Helmuth |
description |
The optical and electrical properties of mesogenic metal-free and metalated phthalocyanines (PCs) with a moderately sized and regioregular alkyl periphery were investigated. In solution, the individualized molecules show fluorescence lifetimes of 4–6 ns in THF. When deposited as solid thin films the materials exhibit significantly shorter fluorescence lifetimes with bi-exponential decay (1.4–1.8 ns; 0.2–0.4 ns) that testify to the formation of aggregates via p–p intermolecular interactions. In diode structures, their pronounced columnar order outbalances the unfavorable planar alignment and leads to excellent rectification behavior. Field-dependent charge carrier mobilities are obtained from the J–V curves in the trap-limited space-charge-limited current regime and demonstrate that the metalated PCs display an improved electrical response with respect to the metal-free homologue. The excited-state lifetime characterization suggest that the p–p intermolecular interactions are stronger for the metal-free PC, confirming that the metallic centre plays an important role in the charge transport inside these materials. |
publishDate |
2015 |
dc.date.issued.fl_str_mv |
2015 |
dc.date.accessioned.fl_str_mv |
2017-02-01T13:42:05Z |
dc.date.available.fl_str_mv |
2017-02-01T13:42:05Z |
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.citation.fl_str_mv |
APOSTOL, P. et al. High rectification in organic diodes based on liquid crystalline phthalocyanines. Physical Chemistry Chemical Physics, v. 17, p. 32390-32397, 2015. Disponível em: <http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=search>. Acesso em: 23 jan. 2017. |
dc.identifier.uri.fl_str_mv |
http://www.repositorio.ufop.br/handle/123456789/7192 |
dc.identifier.issn.none.fl_str_mv |
14639076 |
dc.identifier.uri2.pt_BR.fl_str_mv |
http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=search |
identifier_str_mv |
APOSTOL, P. et al. High rectification in organic diodes based on liquid crystalline phthalocyanines. Physical Chemistry Chemical Physics, v. 17, p. 32390-32397, 2015. Disponível em: <http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=search>. Acesso em: 23 jan. 2017. 14639076 |
url |
http://www.repositorio.ufop.br/handle/123456789/7192 http://pubs.rsc.org/en/content/articlepdf/2015/cp/c5cp05582b?page=search |
dc.language.iso.fl_str_mv |
eng |
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eng |
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openAccess |
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