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Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode
The quantum interaction between molecules and electrode materials at molecule/electrode interfaces is a major ingredient in the electron transport properties of organic junctions. Driven by the coupling strength between the two materials, it results mainly in the broadening and energy shift of the i...
Autores principales: | , , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
RSC
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9473172/ https://www.ncbi.nlm.nih.gov/pubmed/36132450 http://dx.doi.org/10.1039/c8na00106e |
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author | Barraud, Clément Lemaitre, Matthieu Bonnet, Roméo Rastikian, Jacko Salhani, Chloé Lau, Stéphanie van Nguyen, Quyen Decorse, Philippe Lacroix, Jean-Christophe Della Rocca, Maria Luisa Lafarge, Philippe Martin, Pascal |
author_facet | Barraud, Clément Lemaitre, Matthieu Bonnet, Roméo Rastikian, Jacko Salhani, Chloé Lau, Stéphanie van Nguyen, Quyen Decorse, Philippe Lacroix, Jean-Christophe Della Rocca, Maria Luisa Lafarge, Philippe Martin, Pascal |
author_sort | Barraud, Clément |
collection | PubMed |
description | The quantum interaction between molecules and electrode materials at molecule/electrode interfaces is a major ingredient in the electron transport properties of organic junctions. Driven by the coupling strength between the two materials, it results mainly in the broadening and energy shift of the interacting molecular orbitals. Using new electrode materials, such as the recently developed semi-conducting two-dimensional nanomaterials, has become a significant advancement in the field of molecular/organic electronics that opens new possibilities for controlling the interfacial electronic properties and thus the charge injection properties. In this article, we report the use of atomically thin two-dimensional multilayer graphene films as the base electrode in organic junctions with a vertical architecture. The interfacial electronic structure dominated by the covalent bonding between bis-thienyl benzene diazonium-based molecules and the multilayer graphene electrode has been probed by ultraviolet photoelectron spectroscopy and the results are compared with those obtained on junctions with standard Au electrodes. Room temperature injection properties of such interfaces have also been explored by electron transport measurements. We find that, despite strong variations of the density of states, the Fermi energy and the injection barriers, both organic junctions with Au base electrodes and multilayer graphene base electrodes show similar electronic responses. We explain this observation by the strong orbital coupling occurring at the bottom electrode/bis-thienyl benzene molecule interface and by the pinning of the hybridized molecular orbitals. |
format | Online Article Text |
id | pubmed-9473172 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | RSC |
record_format | MEDLINE/PubMed |
spelling | pubmed-94731722022-09-20 Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode Barraud, Clément Lemaitre, Matthieu Bonnet, Roméo Rastikian, Jacko Salhani, Chloé Lau, Stéphanie van Nguyen, Quyen Decorse, Philippe Lacroix, Jean-Christophe Della Rocca, Maria Luisa Lafarge, Philippe Martin, Pascal Nanoscale Adv Chemistry The quantum interaction between molecules and electrode materials at molecule/electrode interfaces is a major ingredient in the electron transport properties of organic junctions. Driven by the coupling strength between the two materials, it results mainly in the broadening and energy shift of the interacting molecular orbitals. Using new electrode materials, such as the recently developed semi-conducting two-dimensional nanomaterials, has become a significant advancement in the field of molecular/organic electronics that opens new possibilities for controlling the interfacial electronic properties and thus the charge injection properties. In this article, we report the use of atomically thin two-dimensional multilayer graphene films as the base electrode in organic junctions with a vertical architecture. The interfacial electronic structure dominated by the covalent bonding between bis-thienyl benzene diazonium-based molecules and the multilayer graphene electrode has been probed by ultraviolet photoelectron spectroscopy and the results are compared with those obtained on junctions with standard Au electrodes. Room temperature injection properties of such interfaces have also been explored by electron transport measurements. We find that, despite strong variations of the density of states, the Fermi energy and the injection barriers, both organic junctions with Au base electrodes and multilayer graphene base electrodes show similar electronic responses. We explain this observation by the strong orbital coupling occurring at the bottom electrode/bis-thienyl benzene molecule interface and by the pinning of the hybridized molecular orbitals. RSC 2018-09-26 /pmc/articles/PMC9473172/ /pubmed/36132450 http://dx.doi.org/10.1039/c8na00106e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Barraud, Clément Lemaitre, Matthieu Bonnet, Roméo Rastikian, Jacko Salhani, Chloé Lau, Stéphanie van Nguyen, Quyen Decorse, Philippe Lacroix, Jean-Christophe Della Rocca, Maria Luisa Lafarge, Philippe Martin, Pascal Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
title | Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
title_full | Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
title_fullStr | Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
title_full_unstemmed | Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
title_short | Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
title_sort | charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9473172/ https://www.ncbi.nlm.nih.gov/pubmed/36132450 http://dx.doi.org/10.1039/c8na00106e |
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