Spectroscopic investigation of nitrogen doped graphene

Autor(en)

Ramakrishna Podila, Julio Chacon-Torres, Jennifer T. Spear, Thomas Pichler, Paola Ayala, Apparao Muralikrishna Rao

Abstrakt

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'-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'-bands with a concomitant downshift in the G'-band. Here, we correlate x-ray photoelectron measurements with Raman spectra to elucidate effects of dopant bonding configuration on vibrational properties of graphene.

Organisation(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

Clemson University

Journal

Applied Physics Letters

Band

101

Anzahl der Seiten

4

ISSN

0003-6951

DOI

https://doi.org/10.1063/1.4752736

Publikationsdatum

2012

Peer-reviewed

Ja

ÖFOS 2012

2020 Elektrotechnik, Elektronik, Informationstechnik

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/5372b9e2-84c6-451e-8400-151a52c8a0fb