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Enhancement of diamond gas sensor responses by gold nanoparticles
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SYSNO ASEP 0570990 Document Type A - Abstract R&D Document Type O - Ostatní Title Enhancement of diamond gas sensor responses by gold nanoparticles Author(s) Kočí, Michal (FZU-D) ORCID
Szabó, Ondrej (FZU-D) ORCID, RID
Husák, M. (CZ)
Kromka, Alexander (FZU-D) RID, ORCID, SAINumber of authors 4 Source Title NANOCON 2022 - Book of Abstracts. - Ostrava : Tanger Ltd, 2022 / Zbořil R. ; Váňová J. - ISBN 978-80-88365-07-5
S. 62-62Number of pages 1 s. Publication form Online - E Action International Conference on Nanomaterials - Research & Application /14./ NANOCON Event date 19.10.2022 - 21.10.2022 VEvent location Brno Country CZ - Czech Republic Event type WRD Language eng - English Country CZ - Czech Republic Keywords gas sensors ; nanocrystalline diamond (NCD) ; gold nanoparticles (Au NPs) Subject RIV JB - Sensors, Measurment, Regulation OECD category Materials engineering Institutional support FZU-D - RVO:68378271 Annotation The nanocrystalline diamond (NCD) film reveals a unique combination of physical, chemical, and optoelectronic properties, which makes it a promising material for various sensing applications. Here, we investigated the influence of preparation technology (two types of CVD systems), top-surface termination (oxygen vs hydrogen), and Au nanoparticles on the gas sensing properties of NCD films. The electrical properties (resistance changes) are measured for oxidizing gas NO2, reducing gas NH3, and neutral synthetic air at temperatures varied from room temperature to 125°C. The measured parameters of the tested diamond sensors are compared and subsequently evaluated. The surface morphology is significant for gas sensors, as a larger surface area (higher roughness) increases the response to different gases. While the NCD termination with hydrogen is principally required for the gas sensor functionality, the Au nanoparticles further enhanced the sensor dynamic response and response magnitude. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2024
Number of the records: 1