Lookup NU author(s): Dr Toby Hopf,
Dr Konstantin Vasilevskiy,
Dr Enrique Escobedo-Cousin,
Professor Anthony O'Neill,
Dr Alton Horsfall,
Dr Jon Goss,
Dr Anders Barlow
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Multilayer epitaxial graphene has been grown on the Si-face of 6H-SiC on-axis commercial substrates under high vacuum conditions and at growth temperatures up to 1900 degrees C, utilizing the standard sublimation growth technique and a modified SiC rapid thermal annealing system which allows for excellent control of heating and cooling ramp rates. The peak growth temperature and total growth time during the graphene growth step, along with the temperature of the initial substrate etch step, were all systematically varied in order to ascertain their effect on the formation of epitaxial graphene films on the SiC surface. Modifying the substrate etch temperature was found to have a significant impact on the morphology of the SiC substrate, with a uniform step structure only developing across the surface within a narrow temperature band. Furthermore, changing the values of the peak temperature or the growth time during the growth step were both shown to have a large effect on the resultant materials properties of the graphene films.
Author(s): Hopf T, Vassilevski K, Escobedo-Cousin E, Wright N, O'Neill A, Horsfall A, Goss J, Barlow A, Wells G, Hunt M
Publication type: Conference Proceedings (inc. Abstract)
Publication status: Published
Conference Name: 15th International Conference on Silicon Carbide and Related Materials (ICSCRM 2013)
Year of Conference: 2014
Online publication date: 26/02/2014
Acceptance date: 01/01/1900
Publisher: Scientific.Net / Trans Tech Publications Inc.
Library holdings: Search Newcastle University Library for this item
Series Title: Materials Science Forum: Silicon Carbide and Related Materials 2013