Spectroscopic investigation of nitrogen doped graphene

Journal Article · Mon Sep 17 00:00:00 EDT 2012 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.4752736· OSTI ID:22080450

Podila, R; Spear, J T ^[1]; Chacon-Torres, J; Pichler, T; Ayala, P ^[2]; Rao, A M ^[1]

---

1. Department of Physics and Astronomy, Clemson University, Clemson, South Carolina 29634 (United States)
2. Faculty of Physics, University of Vienna, Strudlhofgasse 4, A-1090 Vienna (Austria)

Current research efforts are aimed at controlling the electronic properties via doping graphene. Previously, dopant-induced changes in the Fermi velocity were observed to result in an effectively downshifted Raman peak below the G Prime -band for n-doped carbon nanotubes. However, in the case of N-doped graphene, we find that several Raman features vary depending upon both dopant concentration and its bonding environment. For instance, only pyridinic/pyrrolic dopants were observed to result in intense D/D Prime -bands with a concomitant downshift in the G Prime -band. Here, we correlate x-ray photoelectron measurements with Raman spectra to elucidate effects of dopant bonding configuration on vibrational properties of graphene.

• OSTI ID: 22080450
• Journal Information: Applied Physics Letters, Vol. 101, Issue 12; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BONDING
CARBON NANOTUBES
CONFIGURATION
DOPED MATERIALS
FERMI LEVEL
GRAPHENE
NITROGEN ADDITIONS
RAMAN SPECTRA
X RADIATION
X-RAY PHOTOELECTRON SPECTROSCOPY