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...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English English English |
| Published: |
Elsevier B.V
2018
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| Subjects: | |
| Online Access: | http://irep.iium.edu.my/55127/1/55127_Heterogeneous%20SnO2-ZnO%20nanoparticulate_SCOPUS.pdf http://irep.iium.edu.my/55127/2/55127_Heterogeneous%20SnO2-ZnO%20nanoparticulate_WOS.pdf http://irep.iium.edu.my/55127/13/55127_Heterogeneous%20SnO2-ZnO%20nanoparticulate.pdf http://irep.iium.edu.my/55127/ https://www.sciencedirect.com/science/article/pii/S1369800117325015 |
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| 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. |
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