Graphene exfoliation in the presence of semiconducting polymers for improved film homogeneity and electrical performances

Leydecker, Tim; Eredia, Matilde; Liscio, Fabiola; Milita, Silvia; Melinte, Georgian-Alin; Ersen, Ioan-Ovidiu; Sommer, Michael; Ciesielski, Artur; Samori, Paolo

doi:10.1016/j.carbon.2018.01.042

Graphene exfoliation in the presence of semiconducting polymers for improved film homogeneity and electrical performances

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LEYDECKER, Tim, EREDIA, Matilde, LISCIO, Fabiola, MILITA, Silvia, MELINTE, Georgian-Alin, ERSEN, Ioan-Ovidiu, SOMMER, Michael, CIESIELSKI, Artur et SAMORI, Paolo, sans date. Graphene exfoliation in the presence of semiconducting polymers for improved film homogeneity and electrical performances. Carbon [en ligne]. sans date. Vol. 130, pp. 495-502. [Consultésans date]. DOI 10.1016/j.carbon.2018.01.042. Consulté de : https://www.sciencedirect.com/science/article/pii/S00086223183005141. .

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Auteurs	Tim Leydecker Matilde Eredia Fabiola Liscio Silvia Milita Georgian-Alin Melinte Ioan-Ovidiu Ersen Michael Sommer Artur Ciesielski Paolo Samori
Unité de recherche du site	Institut de Science et d'Ingénierie Supramoléculaires - ISIS - UMR7006 Institut de Physique et Chimie des Matériaux de Strasbourg - IPCMS - UMR7504
Langue	en
Volume	130
Page de début	495
Page de fin	502
Date de première publication	2018-01-11
ISSN	00086223
Titre de la source (revue, livre…)	Carbon
Résumé	We report on the production of hybrid graphene/semiconducting polymer films in one step procedure by making use of ultrasound-assisted liquid-phase exfoliation of graphite powder in the presence of π-conjugated polymers, i.e. poly(3-hexylthiophene) Show moreWe report on the production of hybrid graphene/semiconducting polymer films in one step procedure by making use of ultrasound-assisted liquid-phase exfoliation of graphite powder in the presence of π-conjugated polymers, i.e. poly(3-hexylthiophene) (P3HT) or poly[4-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b']dithiophen-2-yl)-alt-[1,2,5]thiadiazolo-[3,4-c]pyridine] (PCDTPT). The polymers were chosen in view of their different propensity to form crystalline structures, their decoration with alkyl chains that are known to possess high affinity for the basal plane of graphene, the energy levels of their frontier orbitals which are extremely similar to the work function of graphene, and their high electrical performance when integrated in field-effect transistors (FETs). The polymers act as a dispersion-stabilizing agent and prevent the re-aggregation of the exfoliated graphene flakes, ultimately enabling the production of homogeneous bi-component dispersions. The electrical characterization of few-layer graphene/PCDTPT hybrids, when integrated as active layer in bottom-contact bottom-gate FETs, revealed an increase of the field-effect mobility compared to the π-conjugated-based pristine devices, a result which can be attributed to the joint effect of the few-layer graphene sheets and semiconducting polymers improving the charge-transport in the channel of the field-effect transistor. In particular, few-layer graphene/PCDTPT films displayed a 30-fold increase of PCDTPT's mobility if compared to pristine polymer samples. Such findings represent a step forward towards the optimization of graphene exfoliation and processing into electronic devices, as well as towards improved electrical performance in organic-based field-effect transistors. Show less
DOI	10.1016/j.carbon.2018.01.042
Éditeur	Elsevier
URL éditeur	https://www.sciencedirect.com/science/article/pii/S0008622318300514
Titre abrégé de la source	Carbon
Type de publication	ACL
Projet(s) de recherche ANR	LabEx project Nanostructures in Interaction with their Environment (ANR-11-LABX-0058_NIE)
Projet(s) de recherche européen(s)	Graphene Flagship (GA-696656)
Domaine	Chimie/Matériaux
Mots-clés	Organic semiconductors Graphene composites Liquid phase exfoliation Hybrid films
Unité de recherche extérieure au site	Istituto per la Microelettronica e Microsistemi (IMM), CNR, via Gobetti 101, 40129 Bologna, Italy Institut für Makromolekulare Chemie, Stefan-Meier-Straße 31, 79104 Freiburg, Germany
Équipes de recherche	E2 : DSI - Département Surfaces et Interfaces
Fonction	aut crp
Identifiant ORCID	https://orcid.org/0000-0003-3542-4092 https://orcid.org/0000-0001-6256-8281
Identifiant idREF	151349363 109288335
Audience	International
URL	https://univoak.eu/islandora/object/islandora:66632