Intrinsic device-to-device variation in graphene field-effect transistors on a Si/SiO2 substrate as a platform for discriminative gas sensing

Alexey Lipatov, Alexey Varezhnikov, Martin Augustin, Michael Bruns, Martin Sommer, Victor Sysoev, Andrei Kolmakov, Alexander Sinitskii

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15 Scopus citations


Arrays of nearly identical graphene devices on Si/SiO2 exhibit a substantial device-to-device variation, even in case of a high-quality chemical vapor deposition (CVD) or mechanically exfoliated graphene. We propose that such device-to-device variation could provide a platform for highly selective multisensor electronic olfactory systems. We fabricated a multielectrode array of CVD graphene devices on a Si/SiO2 substrate and demonstrated that the diversity of these devices is sufficient to reliably discriminate different short-chain alcohols: methanol, ethanol, and isopropanol. The diversity of graphene devices on Si/SiO2 could possibly be used to construct similar multisensor systems trained to recognize other analytes as well.

Original languageEnglish (US)
Article number013114
JournalApplied Physics Letters
Issue number1
StatePublished - Jan 6 2014


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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