Atomic-scale identification of nitrogen dopants in graphene on Ir(111) and Ru(0001)

Huan Yang; Ivan Abilio; Juan Bernal Romero; Carlos Rodriguez; Miguel Escobar Godoy; Mitchell Little; Patrick Mckee; Vanessa Carbajal; Joey Li; Xing Chen; Hong-Jun Gao; Krisztián Palotás; Li Gao

doi:10.1088/1361-648X/ace229

Atomic-scale identification of nitrogen dopants in graphene on Ir(111) and Ru(0001)

J Phys Condens Matter. 2023 Jul 7;35(40). doi: 10.1088/1361-648X/ace229.

Authors

Huan Yang^{1

2}, Ivan Abilio^{3

4}, Juan Bernal Romero¹, Carlos Rodriguez¹, Miguel Escobar Godoy¹, Mitchell Little¹, Patrick Mckee¹, Vanessa Carbajal¹, Joey Li¹, Xing Chen¹, Hong-Jun Gao², Krisztián Palotás^{3

4

5}, Li Gao¹

Affiliations

¹ Department of Physics and Astronomy, California State University, Northridge, CA 91330, United States of America.
² Institute of Physics, Chinese Academy of Sciences, Beijing 100190, People's Republic of China.
³ Institute for Solid State Physics and Optics, Wigner Research Center for Physics, H-1121 Budapest, Hungary.
⁴ Department of Theoretical Physics, Institute of Physics, Budapest University of Technology and Economics, H-1111 Budapest, Hungary.
⁵ ELKH-SZTE Reaction Kinetics and Surface Chemistry Research Group, University of Szeged, H-6720 Szeged, Hungary.

PMID: 37369214
DOI: 10.1088/1361-648X/ace229

Abstract

Nitrogen (N) doped graphene materials have been synthesized using the sole precursor adenine on the Ir(111) and Ru(0001) surfaces. X-ray photoelectron spectroscopy and scanning tunneling microscopy (STM) have been used to characterize the obtained N-doped graphene materials. Several graphitic and pyridinic N dopants have been identified on the atomic scale by combining STM measurements and STM simulations based on density functional theory calculations.

Keywords: density functional theory calculations; nitrogen doped graphene; scanning tunneling microscopy.

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