Heterogeneous SnO2/ZnO nanoparticulate film: Facile synthesis and humidity sensing capability

Ismail, Ahmad Syakirin and Mamat, Mohamad Hafiz and Malek, Mohd Firdaus and Mohd Yusoff, Marmeezee and Mohamed, Ruziana and Md Sin, Nor Diyana and Abu Bakar, Suriani and Mahmood, Mohamad Rusop (2018) Heterogeneous SnO2/ZnO nanoparticulate film: Facile synthesis and humidity sensing capability. Materials Science in Semiconductor Processing, 81. pp. 127-138. ISSN 1369-8001

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Abstract

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.

Item Type:	Article (Journal)
Additional Information:	6421/55127
Uncontrolled Keywords:	Immersion,ZnO,ZnO/SnO2,Tin oxide,Heterojunction,Humidity sensor
Subjects:	T Technology > TH Building construction > TH7005 Heating and ventilation
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering
Depositing User:	Dr. Marmeezee Mohd. Yusoff
Date Deposited:	26 Jun 2018 17:12
Last Modified:	04 Oct 2018 09:25
URI:	http://irep.iium.edu.my/id/eprint/55127

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