期刊
NANOMATERIALS
卷 10, 期 11, 页码 -出版社
MDPI
DOI: 10.3390/nano10112168
关键词
metal oxide; epitaxial graphene on SiC; chemical gas sensor; nanolayer; inter-lab comparison
类别
资金
- Swedish Foundation for Strategic Research (SSF) [GMT14-0077, RMA15-024]
- Estonian Ministry of Education and Research [IUT34-27, 881603]
- Swedish Foundation for Strategic Research (SSF) [GMT14-0077] Funding Source: Swedish Foundation for Strategic Research (SSF)
In this manuscript, we explore the sensor properties of epitaxially grown graphene on silicon carbide decorated with nanolayers of CuO, Fe3O4, V2O5, or ZrO2. The sensor devices were investigated in regard to their response towards NH3 as a typical reducing gas and CO, C6H6, CH2O, and NO2 as gases of interest for air quality monitoring. Moreover, the impact of operating temperature, relative humidity, and additional UV irradiation as changes in the sensing environment have been explored towards their impact on sensing properties. Finally, a cross-laboratory study is presented, supporting stable sensor responses, and the final data is merged into a simplified sensor array. This study shows that sensors can be tailored not only by using different materials but also by applying different working conditions, according to the requirements of certain applications. Lastly, a combination of several different sensors into a sensor array leads to a well-performing sensor system that, with further development, could be suitable for several applications where there is no solution on the market today.
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