Charge injection and transport properties of large area organic junctions based on aryl thin films covalently attached to a multilayer graphene electrode.
Journal
Nanoscale advances
ISSN: 2516-0230
Titre abrégé: Nanoscale Adv
Pays: England
ID NLM: 101738708
Informations de publication
Date de publication:
15 Jan 2019
15 Jan 2019
Historique:
received:
25
07
2018
accepted:
25
09
2018
entrez:
22
9
2022
pubmed:
26
9
2018
medline:
26
9
2018
Statut:
epublish
Résumé
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.
Identifiants
pubmed: 36132450
doi: 10.1039/c8na00106e
pii: c8na00106e
pmc: PMC9473172
doi:
Types de publication
Journal Article
Langues
eng
Pagination
414-420Informations de copyright
This journal is © The Royal Society of Chemistry.
Déclaration de conflit d'intérêts
There are no conflicts to declare.
Références
Nanotechnology. 2016 Apr 8;27(14):145301
pubmed: 26902885
Nat Commun. 2016 Aug 31;7:12668
pubmed: 27578395
Nature. 2004 Apr 29;428(6986):911-8
pubmed: 15118718
ACS Nano. 2011 Nov 22;5(11):9144-53
pubmed: 21999646
J Am Chem Soc. 2011 Aug 3;133(30):11426-9
pubmed: 21740028
J Phys Condens Matter. 2014 Nov 26;26(47):474205
pubmed: 25352559
J Am Chem Soc. 2007 Feb 21;129(7):1890-1
pubmed: 17253692
J Am Chem Soc. 2012 Jan 11;134(1):154-7
pubmed: 22148633
Proc Natl Acad Sci U S A. 2014 Jul 29;111(30):10928-32
pubmed: 25024198
Angew Chem Int Ed Engl. 2017 Sep 25;56(40):12122-12126
pubmed: 28791791
Nano Lett. 2015 May 13;15(5):2892-901
pubmed: 25821897
Acc Chem Res. 2015 Sep 15;48(9):2565-75
pubmed: 26190024
ACS Appl Mater Interfaces. 2017 Dec 6;9(48):42043-42049
pubmed: 29130304
Nano Lett. 2011 Nov 9;11(11):4607-11
pubmed: 22011188
Nano Lett. 2015 Mar 11;15(3):1577-84
pubmed: 25706442
Adv Mater. 2014 May;26(18):2812-7
pubmed: 24458727
Phys Rev Lett. 2006 Nov 3;97(18):187401
pubmed: 17155573
Proc Natl Acad Sci U S A. 2013 Apr 2;110(14):5326-30
pubmed: 23509271
Nanoscale. 2017 Jun 1;9(21):7217-7226
pubmed: 28513712
J Phys Condens Matter. 2016 Mar 9;28(9):094011
pubmed: 26871885
Sci Adv. 2017 Jun 09;3(6):e1602297
pubmed: 28630901
J Am Chem Soc. 2017 Aug 30;139(34):11913-11922
pubmed: 28780873
Nat Commun. 2015 Mar 02;6:6324
pubmed: 25727708
J Am Chem Soc. 2013 Jul 17;135(28):10218-21
pubmed: 23805821
Chem Rev. 2015 Jun 10;115(11):5056-115
pubmed: 25950274
Proc Natl Acad Sci U S A. 2012 Jul 17;109(29):11498-503
pubmed: 22660930
Sci Rep. 2015 Nov 16;5:16710
pubmed: 26567845
Nano Lett. 2016 Oct 12;16(10):6534-6540
pubmed: 27668518
Nano Lett. 2008 Aug;8(8):2458-62
pubmed: 18630972
Nat Nanotechnol. 2017 Aug;12(8):797-803
pubmed: 28674457
ACS Nano. 2016 Feb 23;10(2):2521-7
pubmed: 26841282
Langmuir. 2012 Aug 14;28(32):11767-78
pubmed: 22793962
ACS Nano. 2015 May 26;9(5):5520-35
pubmed: 25894469
Adv Mater. 2018 Mar;30(10):
pubmed: 29356141
Sci Rep. 2016 Feb 11;6:20899
pubmed: 26864735