ZnO/rGO nanocomposite layer as a sensitive layer for simplistic ethanol vapor sensor and UV light detector
Malek-Ashtar University of Technology, Tehran, Iran
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Revised: 21 November 2015
Accepted: 1 December 2015
Published online: 13 January 2016
We investigate on the ethanol vapor sensing and ultraviolet detection of simplistic nanocomposite layers of reduced graphene oxide (rGO) incorporated zinc oxide (ZnO) nanoparticles which produced by hydrothermal technique. The experimental results show that adding rGO to ZnO nanoparticles improves the sensitivity of the samples. A large sensor response and quick recovery time was observed for the nanocomposites samples. The sample containing 3% of rGO shows the optimized state for all-range of ethanol vapor concentration and reached a linear response of 33% at 250 °C. Also the UV photosensitivity of the ZnO-rGO nanocomposite was investigated. The photosensitivity to UV light, response time and signal to noise ratio were improved by adding rGO to ZnO nanoparticles as compared to the pure ZnO.
© EDP Sciences, 2016