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Enhanced gas sensing performance of graphene/ZnS-CdS hetero-nanowires gas sensor synthesized by Langmuir-Blodgett self-assembly method
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Electron microscopy and Nanoengineering)ORCID iD: 0000-0003-1050-8441
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.ORCID iD: 0000-0001-8978-0477
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences.
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2017 (English)In: Journal of Physics Conference Series, ISSN 1742-6588, Vol. 922, article id 012023Article in journal, Meeting abstract (Refereed) Published
Abstract [en]

Graphene is a promising material in the field of solid-state gas sensors due to the unique two-dimensional structure. Here, we have shown by fabricating graphene/ZnS-CdS hetero-nanowire structure, the gas sensor sensitivity has a two-fold increase to 20% under 15 ppm gaseous concentration compared to a 10% response in pristine graphene. Spectroscopy and microscopy analysis indicate that the semi-conducting ZnS-CdS hetero-nanowires are 2 nm wide and densely packed on top of graphene. By combining UV illumination, the device approaches a fast response/recovery and high gas sensitivity, thus has a potential to be used in a detection of wide range of gases. 

Place, publisher, year, edition, pages
2017. Vol. 922, article id 012023
National Category
Analytical Chemistry Materials Chemistry Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-334517DOI: 10.1088/1742-6596/922/1/012023ISI: 000419231200023OAI: oai:DiVA.org:uu-334517DiVA, id: diva2:1159712
Conference
MME 2017 28th Micromechanics and Microsystems Europe workshop
Funder
Knut and Alice Wallenberg FoundationSwedish Research CouncilAvailable from: 2017-11-23 Created: 2017-11-23 Last updated: 2018-04-06Bibliographically approved

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