Preparation and Performance Analysis of Ag/ZnO Humidity Sensor
Highly sensitive silver (Ag) modified zinc oxide (ZnO) humidity sensors were prepared by hydrothermal synthesis and the mechanism was studied. Experimental results show that Ag-modified ZnO can effectively enhance the performance of a humidity sensor. Large number of oxygen vacancies and many active...
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| Format: | Article |
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MDPI AG
2021-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/21/3/857 |
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| author | Peng Li Shuguo Yu Hongyan Zhang |
| author_facet | Peng Li Shuguo Yu Hongyan Zhang |
| author_sort | Peng Li |
| collection | DOAJ |
| description | Highly sensitive silver (Ag) modified zinc oxide (ZnO) humidity sensors were prepared by hydrothermal synthesis and the mechanism was studied. Experimental results show that Ag-modified ZnO can effectively enhance the performance of a humidity sensor. Large number of oxygen vacancies and many active sites are generated on the surface when molar ratio of Ag<sup>+</sup> to Zn<sup>2+</sup> is 1:100, which can accelerate the decomposition of water molecules on surface of the material, thereby improving the response of humidity sensor. Moreover, the linearity of ZnO humidity sensor is greatly improved by silver nanoparticles. Compared with previously reported ZnO-based humidity sensors, Ag/ZnO humidity sensors have a better response (151,700%), good linearity, low hysteresis (3%), and short response/recovery time (36/6 s). At the same time, it is found that the light had little effect on the performance of Ag/ZnO. Therefore, this kind of ZnO sensor with stable performance and excellent performance is expected to be used in the detection of relative humidity in conventional environments. |
| first_indexed | 2024-03-09T03:27:23Z |
| format | Article |
| id | doaj.art-6fe37912bd444dd6b635405c1b85afb9 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T03:27:23Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-6fe37912bd444dd6b635405c1b85afb92023-12-03T15:00:17ZengMDPI AGSensors1424-82202021-01-0121385710.3390/s21030857Preparation and Performance Analysis of Ag/ZnO Humidity SensorPeng Li0Shuguo Yu1Hongyan Zhang2School of Physical Science and Technology, Xinjiang University, Urumqi 830046, ChinaSchool of Physical Science and Technology, Xinjiang University, Urumqi 830046, ChinaSchool of Physical Science and Technology, Xinjiang University, Urumqi 830046, ChinaHighly sensitive silver (Ag) modified zinc oxide (ZnO) humidity sensors were prepared by hydrothermal synthesis and the mechanism was studied. Experimental results show that Ag-modified ZnO can effectively enhance the performance of a humidity sensor. Large number of oxygen vacancies and many active sites are generated on the surface when molar ratio of Ag<sup>+</sup> to Zn<sup>2+</sup> is 1:100, which can accelerate the decomposition of water molecules on surface of the material, thereby improving the response of humidity sensor. Moreover, the linearity of ZnO humidity sensor is greatly improved by silver nanoparticles. Compared with previously reported ZnO-based humidity sensors, Ag/ZnO humidity sensors have a better response (151,700%), good linearity, low hysteresis (3%), and short response/recovery time (36/6 s). At the same time, it is found that the light had little effect on the performance of Ag/ZnO. Therefore, this kind of ZnO sensor with stable performance and excellent performance is expected to be used in the detection of relative humidity in conventional environments.https://www.mdpi.com/1424-8220/21/3/857Ag-modified ZnOhumidity sensorresponselight |
| spellingShingle | Peng Li Shuguo Yu Hongyan Zhang Preparation and Performance Analysis of Ag/ZnO Humidity Sensor Sensors Ag-modified ZnO humidity sensor response light |
| title | Preparation and Performance Analysis of Ag/ZnO Humidity Sensor |
| title_full | Preparation and Performance Analysis of Ag/ZnO Humidity Sensor |
| title_fullStr | Preparation and Performance Analysis of Ag/ZnO Humidity Sensor |
| title_full_unstemmed | Preparation and Performance Analysis of Ag/ZnO Humidity Sensor |
| title_short | Preparation and Performance Analysis of Ag/ZnO Humidity Sensor |
| title_sort | preparation and performance analysis of ag zno humidity sensor |
| topic | Ag-modified ZnO humidity sensor response light |
| url | https://www.mdpi.com/1424-8220/21/3/857 |
| work_keys_str_mv | AT pengli preparationandperformanceanalysisofagznohumiditysensor AT shuguoyu preparationandperformanceanalysisofagznohumiditysensor AT hongyanzhang preparationandperformanceanalysisofagznohumiditysensor |