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Proceedings 2017, 1(4), 469; doi:10.3390/proceedings1040469

GO/2D WS2 Based Humidity Sensor

1
Sensor Laboratory, Department of Information Engineering, University of Brescia, via Branze 38, 25123 Brescia, Italy
2
Nanoelectronics and MEMS Laboratory, National Electronics and Computer Technology Center, National Science and Technology Development Agency, KlongLuang, Pathumthani 12120, Thailand
3
Department of Inorganic Chemistry, University of Chemistry and Technology, Technicka 5, 166 28 Prague 6, Czech Republic
4
School of Physical, Mathematical Science, Nanyang Technological University, Singapore 637371, Singapore
5
School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
*
Authors to whom correspondence should be addressed.
Published: 11 October 2017
Download PDF [268 KB, uploaded 11 October 2017]

Abstract

In this work, 2D WS2 nanosheets prepared by the exfoliation of WS2 with Li-intercalation was combined with GO produced by the Hummer method for humidity sensing applications. The GO and WS2 solutions were mixed with an equal concentration and coated on conductometric transducers. Sensing measurements towards humidity (0–80% RH) at room temperature revealed that the humidity response of hybrid was substantially higher by a factor of 3–9 depending on the RH value compared with those of GO and WS2. Moreover, no cross sensitivity to common gaseous compounds was observed. Therefore, the GO/2D WS2 composite is a highly promising humidity sensor.
Keywords: two-dimensional WS2; graphene oxide; humidity sensor two-dimensional WS2; graphene oxide; humidity sensor
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Comini, E.; Sberveglieri, G.; Wisitsora-at, A.; Sofer, Z.; Martinez, C.C.M.; Pumera, M.; Wlodarski, W. GO/2D WS2 Based Humidity Sensor. Proceedings 2017, 1, 469.

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