Title :

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

Author(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]

Journal title :

The Journal of Physical Chemistry C

Abbreviated title :

J. Phys. Chem. C

Publisher :

American Chemical Society (ACS)

Publication date :

2022-02-28

ISSN :

1932-7447

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [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 ...
Show more >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.Show less >

Language :

Anglais

Audience :

Internationale

Popular science :

Non

Comment :

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

Administrative institution(s) :

Université de Lille
CNRS
INRA
ENSCL

Collections :

• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

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