Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range
In this paper, the UV illumination effect for microwave gas sensors based on the tin dioxide was verified. A UV LED with emission wavelength close to the absorption edge of the SnO<sub>2</sub> gas-sensing layer was selected as the UV source. The developed gas sensors were tested under ex...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-08-01
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| Series: | Micromachines |
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| Online Access: | https://www.mdpi.com/2072-666X/10/9/574 |
| _version_ | 1818269780247838720 |
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| author | Artur Rydosz Kamil Staszek Andrzej Brudnik Slawomir Gruszczynski |
| author_facet | Artur Rydosz Kamil Staszek Andrzej Brudnik Slawomir Gruszczynski |
| author_sort | Artur Rydosz |
| collection | DOAJ |
| description | In this paper, the UV illumination effect for microwave gas sensors based on the tin dioxide was verified. A UV LED with emission wavelength close to the absorption edge of the SnO<sub>2</sub> gas-sensing layer was selected as the UV source. The developed gas sensors were tested under exposure to acetone in the 0−200 ppm range at room temperature. The sensor’s complex reflection coefficient corresponding to target gas concentration was measured with the use of a five-port reflectometer system exhibiting enhanced uncertainty distribution, which allows for the detection of low gas concentration. The UV illumination significantly emphasizes the sensors’ response in terms of both magnitude and phase for low gas concentrations, in contrast to previously reported results, in which only the reflection coefficient’s phase was affected. The highest responses were obtained for modulated UV illumination. |
| first_indexed | 2024-12-12T20:59:49Z |
| format | Article |
| id | doaj.art-90e4949f44954ef88e0dceda436a7f89 |
| institution | Directory Open Access Journal |
| issn | 2072-666X |
| language | English |
| last_indexed | 2024-12-12T20:59:49Z |
| publishDate | 2019-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Micromachines |
| spelling | doaj.art-90e4949f44954ef88e0dceda436a7f892022-12-22T00:12:11ZengMDPI AGMicromachines2072-666X2019-08-0110957410.3390/mi10090574mi10090574Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency RangeArtur Rydosz0Kamil Staszek1Andrzej Brudnik2Slawomir Gruszczynski3Department of Electronics, AGH University of Science and Technology, 30059 Krakow, PolandDepartment of Electronics, AGH University of Science and Technology, 30059 Krakow, PolandDepartment of Electronics, AGH University of Science and Technology, 30059 Krakow, PolandDepartment of Electronics, AGH University of Science and Technology, 30059 Krakow, PolandIn this paper, the UV illumination effect for microwave gas sensors based on the tin dioxide was verified. A UV LED with emission wavelength close to the absorption edge of the SnO<sub>2</sub> gas-sensing layer was selected as the UV source. The developed gas sensors were tested under exposure to acetone in the 0−200 ppm range at room temperature. The sensor’s complex reflection coefficient corresponding to target gas concentration was measured with the use of a five-port reflectometer system exhibiting enhanced uncertainty distribution, which allows for the detection of low gas concentration. The UV illumination significantly emphasizes the sensors’ response in terms of both magnitude and phase for low gas concentrations, in contrast to previously reported results, in which only the reflection coefficient’s phase was affected. The highest responses were obtained for modulated UV illumination.https://www.mdpi.com/2072-666X/10/9/574gas sensorsacetone detectionmicrowave applicationUV illumination |
| spellingShingle | Artur Rydosz Kamil Staszek Andrzej Brudnik Slawomir Gruszczynski Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range Micromachines gas sensors acetone detection microwave application UV illumination |
| title | Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range |
| title_full | Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range |
| title_fullStr | Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range |
| title_full_unstemmed | Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range |
| title_short | Tin Dioxide Thin Film with UV-enhanced Acetone Detection in Microwave Frequency Range |
| title_sort | tin dioxide thin film with uv enhanced acetone detection in microwave frequency range |
| topic | gas sensors acetone detection microwave application UV illumination |
| url | https://www.mdpi.com/2072-666X/10/9/574 |
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