Correlated microscopy of electronic and material properties of graphene grown on diamond thin films

0478412 - FZÚ 2018 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Rezek, Bohuslav - Čermák, Jan - Varga, Marián - Tulic, S. - Skákalová, V. - Waitz, T. - Kromka, Alexander
Correlated microscopy of electronic and material properties of graphene grown on diamond thin films.
NANOCON 2016 8th International Conference on Nanomaterials - Research & Application. Conference proceedings. Ostrava: TANGER Ltd., 2017, s. 48-53. ISBN 978-80-87294-71-0.
[NANOCON 2016. International Conference on Nanomaterials - Research and Application /8./. Brno (CZ), 19.10.2016-21.10.2016]
Grant CEP: GA ČR GF16-34856L
Institucionální podpora: RVO:68378271
Klíčová slova: graphene * diamond * microscopy * micro-spectroscopy * electronic properties
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
https://www.nanocon.eu/cz/sbornik-nanocon-2016/

In this work we compare growth of graphene on diamond thin films that enable large area processing. We use films with different crystal size and surface roughness to obtain deeper insight into formation and properties of GoD. The diamond films are coated by a nm thin sputtered Ni layer and heated to 900°C in a forming gas atmosphere (H2/Ar) to initiate catalytic thermal CVD process. The samples are cleaned from residual Ni after the growth process. We employ scanning electron microscopy, Raman micro-spectroscopy and Kelvin probe force microscopy to correlate material, structural, and electronic properties of graphene on diamond. We show how grain size and grain boundaries influence graphene growth and material and electronic properties. For instance we show that the grain boundaries (with non-diamond carbon phases) in diamond films have an important role. They influence the electronic properties and they are beneficial for forming graphene on diamond higher quality.
Trvalý link: http://hdl.handle.net/11104/0274537