A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite
A ceramic thick film humidity sensor, produced from MnZn ferrite, is presented. The proposed sensing mechanism is a combination of proton hopping, hydronium diffusion, and vacancy donor traps releasing electrons into the conduction band. The sensor structure comprises a two-layer device; the first l...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2002-02-01
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| Series: | Sensors |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1424-8220/2/2/50/ |
| _version_ | 1811184804966694912 |
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| author | D. Egan K. Twomey K. Arshaka |
| author_facet | D. Egan K. Twomey K. Arshaka |
| author_sort | D. Egan |
| collection | DOAJ |
| description | A ceramic thick film humidity sensor, produced from MnZn ferrite, is presented. The proposed sensing mechanism is a combination of proton hopping, hydronium diffusion, and vacancy donor traps releasing electrons into the conduction band. The sensor structure comprises a two-layer device; the first layer is an interdigitated conductor and the second layer is a 30μm thick sensing layer. The effects of sintering the sensing pastes in air and vacuum have been reported. The air-fired sample exhibits the highest humidity sensitivity (1.54%/RH%) and the lowest temperature sensitivity (0.37%/oC). The vacuum-fired sample has the lowest humidity sensitivity (0.043%/RH) and the highest temperature sensitivity (0.77%/oC). The sensitivity results indicate that the air-fired sample has the best potential for use in humidity sensing applications. |
| first_indexed | 2024-04-11T13:19:47Z |
| format | Article |
| id | doaj.art-f01b022763074beeb49da3224c472788 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-11T13:19:47Z |
| publishDate | 2002-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-f01b022763074beeb49da3224c4727882022-12-22T04:22:17ZengMDPI AGSensors1424-82202002-02-0122506110.3390/s20200050A Ceramic Thick Film Humidity Sensor Based on MnZn FerriteD. EganK. TwomeyK. ArshakaA ceramic thick film humidity sensor, produced from MnZn ferrite, is presented. The proposed sensing mechanism is a combination of proton hopping, hydronium diffusion, and vacancy donor traps releasing electrons into the conduction band. The sensor structure comprises a two-layer device; the first layer is an interdigitated conductor and the second layer is a 30μm thick sensing layer. The effects of sintering the sensing pastes in air and vacuum have been reported. The air-fired sample exhibits the highest humidity sensitivity (1.54%/RH%) and the lowest temperature sensitivity (0.37%/oC). The vacuum-fired sample has the lowest humidity sensitivity (0.043%/RH) and the highest temperature sensitivity (0.77%/oC). The sensitivity results indicate that the air-fired sample has the best potential for use in humidity sensing applications.http://www.mdpi.com/1424-8220/2/2/50/CeramicThick filmSensorTemperature and humidity sensitivity |
| spellingShingle | D. Egan K. Twomey K. Arshaka A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite Sensors Ceramic Thick film Sensor Temperature and humidity sensitivity |
| title | A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite |
| title_full | A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite |
| title_fullStr | A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite |
| title_full_unstemmed | A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite |
| title_short | A Ceramic Thick Film Humidity Sensor Based on MnZn Ferrite |
| title_sort | ceramic thick film humidity sensor based on mnzn ferrite |
| topic | Ceramic Thick film Sensor Temperature and humidity sensitivity |
| url | http://www.mdpi.com/1424-8220/2/2/50/ |
| work_keys_str_mv | AT degan aceramicthickfilmhumiditysensorbasedonmnznferrite AT ktwomey aceramicthickfilmhumiditysensorbasedonmnznferrite AT karshaka aceramicthickfilmhumiditysensorbasedonmnznferrite AT degan ceramicthickfilmhumiditysensorbasedonmnznferrite AT ktwomey ceramicthickfilmhumiditysensorbasedonmnznferrite AT karshaka ceramicthickfilmhumiditysensorbasedonmnznferrite |