Abstract
An effective ammonia sensor was developed using a CsPbBr3 thin film prepared directly by dual-source thermal evaporation. The CsPbBr3-based sensor exhibited good selectivity toward ammonia gas at room temperature, showing a high responsivity (958% at 10 ppm) and low detection limit (250 ppb). The sensor also demonstrated good reversibility, repeatability and fast rise/recovery times (12/16 s). Additionally, the effect of humidity on ammonia responsivity was investigated for the application of CsPbBr3 films in practical room-temperature ammonia gas sensors. The ammonia-sensing mechanism of the CsPbBr3 film was proposed and discussed.
Original language | English |
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Article number | 170731 |
Journal | Journal of Alloys and Compounds |
Volume | 960 |
DOIs | |
State | Published - 15 Oct 2023 |
Keywords
- Ammonia gas sensor
- CsPbBr
- Halide perovskites
- Room-temperature gas sensor
- Thermal evaporation