期刊
NANO LETTERS
卷 17, 期 5, 页码 2887-2894出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b00038
关键词
Nitrogen-doped graphene; nitrogen-containing sole precursor; scanning tunneling microscopy; doping properties; azafullerene
类别
资金
- California State University Northridge
- National Science Foundation (NSF) [DMR-1205734]
- National Natural Science Foundation of China [21132007]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1205734] Funding Source: National Science Foundation
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 and X-ray photoelectron spectroscopy 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 froth heteroatom-containing sole precursors is a very promising approach for the preparation of doped, graphene materials with controlled doping properties
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