Journal
NANO LETTERS
Volume 15, Issue 11, Pages 7408-7413Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.5b02831
Keywords
graphene; pyridinic-nitrogen; graphitic-nitrogen; EELS; chemical dynamics
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Funding
- JST Research Acceleration Programme
- National Tsing Hua University
- Taiwan Ministry of Science and Technology [MOST 103-2628-M-007-004-MY3, MOST 103-2119-M-007-008-MY3, MOST 102-2633-M-007-002]
- JSPS KAKENHI [26390004]
- Grants-in-Aid for Scientific Research [26390004] Funding Source: KAKEN
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High density and controllable nitrogen doping in graphene is a critical issue to realize high performance graphene-based devices. In this paper, we demonstrate an efficient method to selectively produce graphitic-N and pyridinic-N defects in graphene by using the mixture plasma of ozone and nitrogen. The atomic structure, electronic structure, and dynamic behavior of these nitrogen defects are systematically studied at the atomic level by using a scanning transmission electron microscopy. The pyridinic-N exhibits higher chemical activity and tends to trap a series of transition metal atoms (Mg, Al, Ca, Ti, Cr, Mn, and Fe) as individual atoms.
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