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A design of high performance gas sensor array withdiscrete islands of Au catalyst for increasing of ZnO nanowire junctions
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Microsystems Technology. (Mikrosystemteknik)
Hanoi University of Science and Technology (HUST), Hanoi, VIETNAM. (International Training Institute for Materials Science (ITIMS))
Hanoi University of Science and Technology (HUST), Hanoi, VIETNAM. (International Training Institute for Materials Science (ITIMS))
Hanoi University of Science and Technology (HUST), Hanoi, VIETNAM. (International Training Institute for Materials Science (ITIMS))
2013 (English)Conference proceedings (editor) (Refereed)
Abstract [en]

In this study, an effective design for growth of ZnO nanowires directly on gas sensor chips is introduced. The design utilizes the dendrite islands of Au catalyst deposited between and on the Pt electrodes for the nanowires to grow on instead of a continuous seed layer or Au film. This lead to an increase of the nanowirenanowire junctions in the devices, as well as a reduction of the leak current that would occur through the mentioned alternative seed layer; resulting in a higher sensitivity. The results showed that the developed gas sensors could be used for monitoring of NO2 at low concentration.

Place, publisher, year, edition, pages
IEEE conference proceedings, 2013. , 4 p.
National Category
Nano Technology
Research subject
Engineering Science with specialization in Microsystems Technology
Identifiers
URN: urn:nbn:se:uu:diva-212929DOI: W3P.043OAI: oai:DiVA.org:uu-212929DiVA: diva2:679706
Conference
2013 Transducers & Eurosensors XXVII: The 17th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII
Available from: 2013-12-16 Created: 2013-12-16 Last updated: 2014-02-03

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Nguyen, Hugo

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