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Temperature Dependent Chemical Sensitivity of Epitaxial Graphene

Lookup NU author(s): Dr Venkata Nagareddy, Dr Kurt Gaskill, Dr Jon Goss, Professor Nick Wright, Dr Alton Horsfall

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Abstract

We investigated the chemical sensing mechanism of epitaxial graphene grown on 6H-SiC (0001) to different polar solvents and their behavior at higher temperatures. We show that at 300 K the sensitivity of the graphene sensor increases with the dipole moment of a solvent and decreases significantly as the temperature increased to 42.5 K. Using electrical measurements, we also show that graphene can effectively discriminate between polar protic and polar aprotic solvents with the shift in device electrical resistance at 300 K.


Publication metadata

Author(s): Nagareddy VK, Gaskill DK, Tedesco JL, Myers-Ward RL, Eddy CR, Goss JP, Wright NG, Horsfall AB

Editor(s): Devaty, R.P., Dudley, M., Chow, T.P., Neudeck, P.G.

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: 14th International Conference on Silicon Carbide and Related Materials (ICSCRM)

Year of Conference: 2012

Pages: 691-694

ISSN: 0255-5476

Publisher: Trans Tech Publications Ltd.

URL: http://dx.doi.org/10.4028/www.scientific.net/MSF.717-720.691

DOI: 10.4028/www.scientific.net/MSF.717-720.691

Library holdings: Search Newcastle University Library for this item

Series Title: Materials Science Forum

ISBN: 9783037854198


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