Evaluation of Constants of Electron–Phonon Coupling between Gas Molecules and Graphene
- Authors: Davydov S.Y.1,2
-
Affiliations:
- Ioffe Physical Technical Institute
- ITMO University
- Issue: Vol 44, No 2 (2018)
- Pages: 105-107
- Section: Article
- URL: https://journals.rcsi.science/1063-7850/article/view/207213
- DOI: https://doi.org/10.1134/S1063785018020062
- ID: 207213
Cite item
Abstract
The adsorption of CO, NO, NO2, Н2О, and NH3 molecules on ideal graphene and graphene doped with aluminum is analyzed using simple models. The constants of electron–phonon coupling are evaluated with the Lennard-Jones 6–12 potential for ideal graphene and the 2–4 potential for doped graphene. It is demonstrated that the dimensionless electron–phonon-coupling constant for ideal graphene is ζ ≫ 1, while ζ ~ 1 corresponds to graphene doped with aluminum. Ways to use both types of graphene as a resistive gas sensor are discussed.
About the authors
S. Yu. Davydov
Ioffe Physical Technical Institute; ITMO University
Author for correspondence.
Email: Sergei_Davydov@mail.ru
Russian Federation, St. Petersburg, 194021; St. Petersburg, 197101