Titre :

Wet-Chemical Noncovalent Functionalization of CVD Graphene: Molecular Doping and Its Effect on Electrolyte-Gated Graphene Field-Effect Transistor Characteristics

Auteur(s) :

Dieng, Mbaye [Auteur]
Laboratoire Instrumentation, Simulation et Informatique Scientifique [COSYS-LISIS]
Bensifia, Mohamed [Auteur]
Laboratoire Modélisation et Simulation Multi-Echelle [MSME]
Borme, Jérôme [Auteur]
International Iberian Nanotechnology Laboratory [INL]
Florea, Ileana [Auteur]
Abreu, Catarina M. [Auteur]
Jama, charafeddine [Auteur]
Unité Matériaux et Transformations (UMET) - UMR 8207
Léonard, Céline [Auteur]
Laboratoire de Modélisation et Simulation Multi Echelle [MSME]
Alpuim, Pedro [Auteur]
International Iberian Nanotechnology Laboratory [INL]
Pribat, Didier [Auteur]
Laboratoire de physique des interfaces et des couches minces [Palaiseau] [LPICM]
Yassar, Abderrahim [Auteur]
Bouanis, Fatima Z. [Auteur]

Titre de la revue :

The Journal of Physical Chemistry C

Nom court de la revue :

J. Phys. Chem. C

Éditeur :

American Chemical Society (ACS)

Date de publication :

2022-02-28

ISSN :

1932-7447

Discipline(s) HAL :

Chimie/Matériaux
Chimie/Polymères

Résumé en anglais : [en]

Graphene sheets (mono- and multilayers) were synthesized by chemical vapor deposition and functionalized with various aromatic molecules such as Fe-/Co-porphyrin and Fe-phthalocyanine through π–π interactions. The resulting ...
Lire la suite >Graphene sheets (mono- and multilayers) were synthesized by chemical vapor deposition and functionalized with various aromatic molecules such as Fe-/Co-porphyrin and Fe-phthalocyanine through π–π interactions. The resulting nanohybrid materials were characterized by Raman spectroscopy (RS), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and scanning transmission electron microscopy (STEM) techniques. The presence of physi-adsorbed molecules (Fe-/Co-porphyrin and Fe-phthalocyanine) on the graphene sheet surface is evidenced by spectroscopic and microscopic analyses, which confirm that these molecules are immobilized through electrostatic and π–π interactions. RS confirmed the n- or p-type doping of graphene, according to the chemical nature of those physi-adsorbed molecules. The electrical characteristics of electrolyte-gated graphene field-effect transistors (GFETs) based on nanohybrid materials were subsequently evaluated and demonstrated a charge transfer between the physi-adsorbed molecules and the graphene. All of these results suggest that the electronic structure of graphene can be tailored by doping with aromatic molecules. Density functional theory (DFT) calculations were performed to confirm these observations.Lire moins >

Langue :

Anglais

Audience :

Internationale

Vulgarisation :

Non

Commentaire :

https://hal.archives-ouvertes.fr/hal-03592531

Établissement(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Équipe(s) de recherche :

Ingénierie des Systèmes Polymères

Date de dépôt :

2022-03-04T13:41:43Z
2022-03-05T10:25:57Z