Molecular doping is an efficient, non-destructive, and simple method for changing the electronic structure of materials. Here, we present a simple air ambient vapor deposition method for functionalization of pristine graphene with a strong electron acceptor: copper chloride. The doped graphene was characterized by Raman spectroscopy, UV-vis-NIR optical absorption spectroscopy, scanning electron microscopy, and electro-physical measurements performed using the 4-probe method. The effect of charge transfer from graphene to a dopant results in shifting the Fermi level in doped graphene. The change of the electronic structure of doped graphene was confirmed by the tangential Raman peak (G-peak) shift and by the appearance of the gap in the UV-vis-NIR spectrum after doping. Moreover, the charge transfer resulted in a substantial decrease in electrical sheet resistance depending on the doping level. At the highest concentration of copper chloride, a Fermi level shift into the valence band up to 0.64 eV and a decrease in the sheet resistance value by 2.36 times were observed (from 888 Ω/sq to 376 Ω/sq for a single graphene layer with 97% of transparency).
Skip Nav Destination
Article navigation
15 January 2018
Research Article|
January 18 2018
Modification of graphene electronic properties via controllable gas-phase doping with copper chloride
Maxim G. Rybin
;
Maxim G. Rybin
A.M. Prokhorov General Physics Institute
, Vavilov Str. 38, 119991 Moscow, Russia
Search for other works by this author on:
Vera R. Islamova;
Vera R. Islamova
A.M. Prokhorov General Physics Institute
, Vavilov Str. 38, 119991 Moscow, Russia
Search for other works by this author on:
Ekaterina A. Obraztsova;
Ekaterina A. Obraztsova
A.M. Prokhorov General Physics Institute
, Vavilov Str. 38, 119991 Moscow, Russia
Search for other works by this author on:
Elena D. Obraztsova
Elena D. Obraztsova
A.M. Prokhorov General Physics Institute
, Vavilov Str. 38, 119991 Moscow, Russia
Search for other works by this author on:
Appl. Phys. Lett. 112, 033107 (2018)
Article history
Received:
September 21 2017
Accepted:
January 09 2018
Citation
Maxim G. Rybin, Vera R. Islamova, Ekaterina A. Obraztsova, Elena D. Obraztsova; Modification of graphene electronic properties via controllable gas-phase doping with copper chloride. Appl. Phys. Lett. 15 January 2018; 112 (3): 033107. https://doi.org/10.1063/1.5006001
Download citation file:
Sign in
Don't already have an account? Register
Sign In
You could not be signed in. Please check your credentials and make sure you have an active account and try again.
Sign in via your Institution
Sign in via your InstitutionPay-Per-View Access
$40.00
Citing articles via
Related Content
Plasma engineering of graphene flakes and their features
AIP Conference Proceedings (November 2018)
Manipulation of graphene work function using a self-assembled monolayer
J. Appl. Phys. (August 2014)
Preparation and magnetic properties of phthalocyanine-based carbon materials containing transition metals
J. Appl. Phys. (July 2016)
Deposition of dielectric films on silicon using a fore-vacuum plasma electron source
Rev. Sci. Instrum. (June 2016)
Evolution of magnetism in graphene oxide
AIP Conference Proceedings (November 2020)