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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...

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Autores principales: 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
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2018
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.
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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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