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Hydrogen gas sensor based on SbxOy nanostructures with a langasite substrate

journal contribution
posted on 2024-11-01, 02:54 authored by Rashidah Arsat, Soo Lin Joy Tan, Wojciech WlodarskiWojciech Wlodarski, Kourosh Kalantar ZadehKourosh Kalantar Zadeh
We have developed gas sensors with antimony oxide nanostructured thin films based on a langasite (LGS) substrate and gold electrodes. Nano-trapezoids and nanorods have been synthesized on langasite and gold surfaces, respectively. With gold (Au) catalyst assistance, these nanoscale structures were grown using the thermal evaporation method. The morphology of the as-synthesized nanoscale structures were characterised using Scanning Electron Microscopy (SEM), X-Ray Diffraction (XRD), and Energy Dispersive X-Ray (EDX). It was observed that the nanorods have a diameter of 30 to 50 nm and a length up to 750 nm. Meanwhile, for nano-trapezoids, the widths are in a range of 150 to 200 nm, heights in a range of 50 to 140 nm and the length is up to 300 nm. The possible mechanism of SbxOy nanostructures formation is discussed in this report. This sensor has been used for hydrogen (H2) sensing. Response and recovery times and device sensitivity have been measured and the results were discussed.

History

Journal

Sensor Letters

Volume

4

Issue

4

Start page

419

End page

425

Total pages

7

Publisher

American Scientific Publishers

Place published

USA

Language

English

Copyright

© 2006 American Scientific Publishers

Former Identifier

2006001862

Esploro creation date

2020-06-22

Fedora creation date

2009-11-25

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