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UV-activated room-temperature gas sensing mechanism of polycrystalline ZnO
Abstract
The effects of UV illumination on the electronic properties and gas sensing performance of ZnO are reported. It is found that UV light improves the sensitivity and the sensor response and recovery rate. By investigating the photoresponse behavior of ZnO, we observe that the electrons generated by UV light promote the adsorption of oxygen and form the photoinduced oxygen ions [O2−(hv)]. These ions [O2−(hv)] are responsible for the room-temperature gas sensing phenomena and promise enhanced sensor performance through further optimization.
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Cited by
Room-temperature gas sensing of ZnO-based gas sensor: A review
Zhu, L., & Zeng, W. (2017) · Sensors and Actuators A: Physical · doi:10.1016/j.sna.2017.10.021 · Cited by 1,105
Recent advances in energy-saving chemiresistive gas sensors: A review
Majhi, S. M., Mirzaei, A., Kim, H. W., Kim, S. S., & Kim, T. W. (2021) · Nano Energy · doi:10.1016/j.nanoen.2020.105369 · Cited by 653
Metadata
- Authors
- Fan, S.-W., Srivastava, A. K., & Dravid, V. P.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2009-10-05
- Volume
- 95
- Issue
- 14
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W2056193398
- Cited by
- 357
- References
- 0
- FWCI
- 7.92
- Type
- journal article
- Language
- en
- Open access
- closed
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- Fan, S.-W., Srivastava, A. K., & Dravid, V. P. (2009). UV-activated room-temperature gas sensing mechanism of polycrystalline ZnO. Applied Physics Letters. https://doi.org/10.1063/1.3243458
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