Controlled Synthesis of Nitrogen-Doped Graphene on Ruthenium from Azafullerene.

Author(s) Fei, X.; Neilson, J.; Li, Y.; Lopez, V.; Garrett, S.J.; Gan, L.; Gao, H.J.; Gao, L.
Journal Nano Lett
Date Published 2017 Apr 11

The controlled synthesis of high-quality nitrogen (N) doped single layer graphene on the Ru(0001) surface has been achieved using the N-containing sole precursor azafullerence (C59NH). The synthesis process and doping properties have been investigated on the atomic scale by combining scanning tunneling microscopy (STM) and x-ray photoelectron spectroscopy (XPS) measurements. We find for the first time that the concentration of N-related defects on the N-doped graphene/Ru(0001) surface is tunable by adjusting the dosage of sole precursor and the number of growth cycles. Two primary types of N-related defects have been observed. The predominant bonding configuration of N atoms in the obtained graphene layer is pyridinic N. Our findings indicate that the synthesis from heteroatom-containing sole precursors is a very promising approach for the preparation of doped graphene materials with controlled doping properties.

DOI 10.1021/acs.nanolett.7b00038
ISSN 1530-6992
Citation Nano Lett. 2017.

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