Heterogeneous SnO2/ZnO nanoparticulate film: Facile synthesis and humidity sensing capability
Highly sensitive and extremely thin tin oxide/zinc oxide (SnO2/ZnO) heterojunction films were prepared via a two-step solution-based method for humidity-sensing application. The average diameters of the ZnO and SnO2 nanoparticles were 26 and 6 nm, respectively. The deposition of SnO2 for 3 min reduc...
| Published in: | Materials Science in Semiconductor Processing |
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| Main Author: | |
| Format: | Article |
| Language: | English |
| Published: |
Elsevier Ltd
2018
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| Online Access: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044142159&doi=10.1016%2fj.mssp.2018.03.022&partnerID=40&md5=6bf92b8353749b899e455d96ae01e5b3 |
| Summary: | Highly sensitive and extremely thin tin oxide/zinc oxide (SnO2/ZnO) heterojunction films were prepared via a two-step solution-based method for humidity-sensing application. The average diameters of the ZnO and SnO2 nanoparticles were 26 and 6 nm, respectively. The deposition of SnO2 for 3 min reduced film resistance from 6.74 MΩ to 0.40 MΩ. Remarkably, the humidity-sensing performance of the heterojunction sensors was critically dependent on deposition time, and sensors subjected to 3 min deposition exhibited the highest sensitivity (90.56) to humidity, which was significantly higher than that of bare ZnO. This study indicates that the use of SnO2/ZnO heterojunction has a great potential in humidity sensing applications. © 2018 Elsevier Ltd |
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| ISSN: | 13698001 |
| DOI: | 10.1016/j.mssp.2018.03.022 |