Enhancement of diamond gas sensor responses by gold nanoparticles

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F22%3A00570990" target="_blank" >RIV/68378271:_____/22:00570990 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Enhancement of diamond gas sensor responses by gold nanoparticles
Original language description
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.
Czech name
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Czech description
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Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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