Publication detail

In Situ Variable-Temperature Scanning Tunneling Microscopy Studies of Graphene Growth Using Benzene on Pd(111)

ARIAS, P. TESAŘ, J. KAVNER, A. ŠIKOLA, T. KODAMBAKA, S.

Original Title

In Situ Variable-Temperature Scanning Tunneling Microscopy Studies of Graphene Growth Using Benzene on Pd(111)

Type

journal article in Web of Science

Language

English

Original Abstract

Using a combination of in situ ultra-high vacuum variable-temperature scanning tunneling microscopy, ex situ Raman spectroscopy, and scanning electron microscopy, we investigated the growth of graphene using benzene on Pd(111) at temperatures up to 1100 K. Benzene adsorbs readily on Pd(111) at room-temperature and forms an ordered superstructure upon annealing at 473 K. Exposure to benzene at 673 K enhances Pd step motion and yields primarily amorphous carbon upon cooling to room-temperature. Monolayer graphene domains, 10 ~ 30 nm in size, appear during annealing this sample at 873 K. Dosing benzene at 1100 K results in graphene domains with varying degrees of crystallinity, while post-deposition annealing at 1100 K for 1200 s yields monolayer graphene domains larger than 150 × 150 nm2. Our results, which indicate that graphene growth on Pd(111) using benzene requires deposition/annealing temperatures higher than 673 K, are in striking contrast with the reported growth of graphene using benzene at temperatures as low as 373 K on relatively inert Cu surfaces.

Keywords

aromatic; benzene; graphene; STM; chemical vapor deposition; in situ

Authors

ARIAS, P.; TESAŘ, J.; KAVNER, A.; ŠIKOLA, T.; KODAMBAKA, S.

Released

28. 1. 2020

ISBN

1936-0851

Periodical

ACS Nano

Year of study

14

Number

1

State

United States of America

Pages from

1141

Pages to

1147

Pages count

7

URL

https://pubs.acs.org/doi/10.1021/acsnano.9b09067

BibTex

@article{BUT161239,
  author="Pedro {Arias} and Jan {Tesař} and Abby {Kavner} and Tomáš {Šikola} and Suneel {Kodambaka}",
  title="In Situ Variable-Temperature Scanning Tunneling Microscopy Studies of Graphene Growth Using Benzene on Pd(111)",
  journal="ACS Nano",
  year="2020",
  volume="14",
  number="1",
  pages="1141--1147",
  doi="10.1021/acsnano.9b09067",
  issn="1936-0851",
  url="https://pubs.acs.org/doi/10.1021/acsnano.9b09067"
}