Hydrogen interaction with graphene on Ir(1 1 1) : A combined intercalation and functionalization study
(2019) In Journal of Physics Condensed Matter 31(8).- Abstract
We demonstrate a procedure for obtaining a H-intercalated graphene layer that is found to be chemically decoupled from the underlying metal substrate. Using high-resolution x-ray photoelectron spectroscopy and scanning tunneling microscopy techniques, we reveal that the hydrogen intercalated graphene is p-doped by about 0.28 eV, but also identify structures of interfacial hydrogen. Furthermore, we investigate the reactivity of the decoupled layer towards atomic hydrogen and vibrationally excited molecular hydrogen and compare these results to the case of non-intercalated graphene. We find distinct differences between the two. Finally, we discuss the possibility to form graphane clusters on an iridium substrate by combined intercalation... (More)
We demonstrate a procedure for obtaining a H-intercalated graphene layer that is found to be chemically decoupled from the underlying metal substrate. Using high-resolution x-ray photoelectron spectroscopy and scanning tunneling microscopy techniques, we reveal that the hydrogen intercalated graphene is p-doped by about 0.28 eV, but also identify structures of interfacial hydrogen. Furthermore, we investigate the reactivity of the decoupled layer towards atomic hydrogen and vibrationally excited molecular hydrogen and compare these results to the case of non-intercalated graphene. We find distinct differences between the two. Finally, we discuss the possibility to form graphane clusters on an iridium substrate by combined intercalation and H atom exposure experiments.
(Less)
- author
- organization
- publishing date
- 2019-01-10
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- functionalization, grapheme, intercalation
- in
- Journal of Physics Condensed Matter
- volume
- 31
- issue
- 8
- article number
- 085001
- publisher
- IOP Publishing
- external identifiers
-
- pmid:30628585
- scopus:85060384946
- ISSN
- 0953-8984
- DOI
- 10.1088/1361-648X/aaf76b
- language
- English
- LU publication?
- yes
- id
- e8a4726d-1b92-44d0-ae20-7cf7d6e797aa
- date added to LUP
- 2022-03-30 10:59:49
- date last changed
- 2024-02-10 03:43:51
@article{e8a4726d-1b92-44d0-ae20-7cf7d6e797aa,
abstract = {{<p>We demonstrate a procedure for obtaining a H-intercalated graphene layer that is found to be chemically decoupled from the underlying metal substrate. Using high-resolution x-ray photoelectron spectroscopy and scanning tunneling microscopy techniques, we reveal that the hydrogen intercalated graphene is p-doped by about 0.28 eV, but also identify structures of interfacial hydrogen. Furthermore, we investigate the reactivity of the decoupled layer towards atomic hydrogen and vibrationally excited molecular hydrogen and compare these results to the case of non-intercalated graphene. We find distinct differences between the two. Finally, we discuss the possibility to form graphane clusters on an iridium substrate by combined intercalation and H atom exposure experiments.</p>}},
author = {{Balog, Richard and Cassidy, Andrew and Jørgensen, Jakob and Kyhl, Line and Andersen, Mie and Čabo, Antonija Grubišić and Ravani, Foteini and Bignardi, Luca and Lacovig, Paolo and Lizzit, Silvano and HornekÆr, Liv}},
issn = {{0953-8984}},
keywords = {{functionalization; grapheme; intercalation}},
language = {{eng}},
month = {{01}},
number = {{8}},
publisher = {{IOP Publishing}},
series = {{Journal of Physics Condensed Matter}},
title = {{Hydrogen interaction with graphene on Ir(1 1 1) : A combined intercalation and functionalization study}},
url = {{http://dx.doi.org/10.1088/1361-648X/aaf76b}},
doi = {{10.1088/1361-648X/aaf76b}},
volume = {{31}},
year = {{2019}},
}