NO2 and NH3 Sensing Characteristics of Inkjet Printing Graphene Gas Sensors
1
Infineon Technology AG, 85579 Neubiberg, Germany
2
Institute of Electronic Sensor Systems, Technische Universität Graz, 8010 Graz, Austria
*
Author to whom correspondence should be addressed.
Sensors 2019, 19(15), 3379; https://doi.org/10.3390/s19153379
Received: 15 June 2019
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Revised: 24 July 2019
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Accepted: 26 July 2019
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Published: 1 August 2019
(This article belongs to the Special Issue Applications of Graphene-Based Materials in Sensors)
Graphene is a good candidate for filling the market requirements for cheap, high sensitivity, robust towards contamination, low noise, and low power consumption gas sensors, thanks to its unique properties, i.e., large surface, high mobility, and long-term stability. Inkjet printing is a cheap additive manufacturing method allowing fast, relatively precise and contactless deposition of a wide range of materials; it can be considered therefore the ideal technique for fast deposition of graphene films on thin substrates. In this paper, the sensitivity of graphene-based chemiresistor gas sensors, fabricated through inkjet printing, is investigated using different concentrations of graphene in the inks. Samples have been produced and characterized in terms of response towards humidity, nitrogen dioxide, and ammonia. The presented results highlight the importance of tuning the layer thickness and achieving good film homogeneity in order to maximize the sensitivity of the sensor.
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Keywords:
graphene; inkjet printing; gas sensor
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MDPI and ACS Style
Travan, C.; Bergmann, A. NO2 and NH3 Sensing Characteristics of Inkjet Printing Graphene Gas Sensors. Sensors 2019, 19, 3379. https://doi.org/10.3390/s19153379
AMA Style
Travan C, Bergmann A. NO2 and NH3 Sensing Characteristics of Inkjet Printing Graphene Gas Sensors. Sensors. 2019; 19(15):3379. https://doi.org/10.3390/s19153379
Chicago/Turabian StyleTravan, Caterina, and Alexander Bergmann. 2019. "NO2 and NH3 Sensing Characteristics of Inkjet Printing Graphene Gas Sensors" Sensors 19, no. 15: 3379. https://doi.org/10.3390/s19153379
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