A Study of High-Sensitivity Electro-Resistance Type Pre-Annealing ZnO-Doped CsPbBr[sub.3] Perovskite Acetone Sensors

In this work, acetone gas sensors were fabricated using pre-annealing metal oxide zinc oxide (pa-ZnO)-doped perovskite cesium lead bromide (CsPbBr[sub.3]). The ZnO nanopowder, before it was doped into CsPbBr[sub.3] solution, was first put into a furnace to anneal at different temperatures, and forme...

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Bibliographic Details
Published inSensors (Basel, Switzerland) Vol. 23; no. 4
Main Authors Chen, Lung-Chien, Sung, An-Ni, Lee, Kun-Yi
Format Journal Article
LanguageEnglish
Published MDPI AG 01.02.2023
Subjects
Acetone
Annealing
Chang, C.C
Perovskite
Sensors
Zinc oxide
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ISSN1424-8220
1424-8220
DOI10.3390/s23042164

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Summary:In this work, acetone gas sensors were fabricated using pre-annealing metal oxide zinc oxide (pa-ZnO)-doped perovskite cesium lead bromide (CsPbBr[sub.3]). The ZnO nanopowder, before it was doped into CsPbBr[sub.3] solution, was first put into a furnace to anneal at different temperatures, and formed the pa-ZnO. The properties of pa-ZnO were different from ZnO. The optimized doping conditions were 2 mg of pa-ZnO nanopowder and pre-annealing at 300 °C. Under these conditions, the highest sensitivity (gas signal current-to-air background current ratio) of the ZnO-doped CsPbBr[sub.3] perovskite acetone sensor was 1726. In addition, for the limit test, 100 ppm was the limit of detection of the ZnO-doped CsPbBr[sub.3] perovskite acetone sensor and the sensitivity was 101.
ISSN:1424-8220
1424-8220
DOI:10.3390/s23042164