Sensitivity optimization of epitaxial graphene-based gas sensors

Sergey Novikov; Alexandre Satrapinski; Natalia Lebedeva; Ilkka Iisakka

doi:10.1109/TIM.2013.2253913

Sensitivity optimization of epitaxial graphene-based gas sensors

Sergey Novikov, Alexandre Satrapinski, Natalia Lebedeva, Ilkka Iisakka

Research output: Contribution to journal › Article › Scientific › peer-review

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Abstract

Epitaxial 4H-SiC graphene films for use in ambient gas sensing are fabricated and tested. The sensitivity response to nitrogen dioxide is optimized by varying both operation temperatures and humidity. A relative resistance change response of -45% is obtained upon application of elevated temperatures and a gas mixture containing NO₂ at a concentration of 10 parts per billion (10 ppb). The sensitivity response increased linearly with NO₂ concentration, reaching -60% at a concentration of 250 ppb, followed by saturation at 1 part per million (ppm) level.

Original language	English
Pages (from-to)	1859-1864
Journal	IEEE Transactions on Instrumentation and Measurement
Volume	62
Issue number	6
DOIs	https://doi.org/10.1109/TIM.2013.2253913
Publication status	Published - 2013
MoE publication type	A1 Journal article-refereed

Keywords

epitaxial graphene
gas sensors
graphene fabrication
measurement techniques
sensitivity measurements

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10.1109/TIM.2013.2253913

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abstract = "Epitaxial 4H-SiC graphene films for use in ambient gas sensing are fabricated and tested. The sensitivity response to nitrogen dioxide is optimized by varying both operation temperatures and humidity. A relative resistance change response of -45% is obtained upon application of elevated temperatures and a gas mixture containing NO2 at a concentration of 10 parts per billion (10 ppb). The sensitivity response increased linearly with NO2 concentration, reaching -60% at a concentration of 250 ppb, followed by saturation at 1 part per million (ppm) level.",

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AU - Lebedeva, Natalia

AU - Iisakka, Ilkka

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Y1 - 2013

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AB - Epitaxial 4H-SiC graphene films for use in ambient gas sensing are fabricated and tested. The sensitivity response to nitrogen dioxide is optimized by varying both operation temperatures and humidity. A relative resistance change response of -45% is obtained upon application of elevated temperatures and a gas mixture containing NO2 at a concentration of 10 parts per billion (10 ppb). The sensitivity response increased linearly with NO2 concentration, reaching -60% at a concentration of 250 ppb, followed by saturation at 1 part per million (ppm) level.

KW - epitaxial graphene

KW - gas sensors

KW - graphene fabrication

KW - measurement techniques

KW - sensitivity measurements

U2 - 10.1109/TIM.2013.2253913

DO - 10.1109/TIM.2013.2253913

M3 - Article

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JO - IEEE Transactions on Instrumentation and Measurement

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ER -

Sensitivity optimization of epitaxial graphene-based gas sensors

Abstract

Keywords

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