The influence of γ-irradiation on nitrogen configuration in nitrogen-doped single-walled carbon nanotubes
- Author(s)
- Theerapol Thurakitseree, Christian Kramberger, Narong Chanlek, Ratchadaporn Supruangnet, Anurat Wisitsorraat, Hideki Nakajima, Shigeo Maruyama
- Abstract
Electronic properties of nitrogen-doped single-walled carbon nanotubes (N-doped SWCNTs) depend on carbon and nitrogen configuration. Depending on the intrinsic nitrogen structure, it can be either intrinsic p- or n- doping. Here, we have investigated the influence of soft gamma (γ)-irradiation on the nitrogen configuration in vertically aligned N-doped SWCNT arrays. As the irradiation dose increased, pyridinic and graphitic nitrogens become more predominant. In general, the presence of holes refer to p-doping. However, XPS spectra show n-doping features, whereas the slight downshift in the G line position in Raman spectra is from compensating the ambient p-doping. The local transition of π* nitrogen was also revealed by X-ray absorption spectroscopy.
- Organisation(s)
- Electronic Properties of Materials
- External organisation(s)
- Maejo University, Synchrotron Light Research Institute, National Electronics and Computer Technology Center (NECTEC), University of Tokyo, National Institute of Advanced Industrial Science and Technology (AIST)
- Journal
- Diamond and Related Materials
- Volume
- 101
- No. of pages
- 5
- ISSN
- 0925-9635
- DOI
- https://doi.org/10.1016/j.diamond.2019.107569
- Publication date
- 01-2020
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103018 Materials physics
- Keywords
- ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials, Mechanical Engineering, Materials Chemistry, Chemistry(all), Electrical and Electronic Engineering
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/the-influence-of-irradiation-on-nitrogen-configuration-in-nitrogendoped-singlewalled-carbon-nanotubes(4c6b35c6-6dd0-4a7d-8a5f-0378fc546850).html