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AASCIT Communications | Volume 3, Issue 2 | Feb. 19, 2016 online | Page:90-94
New Photovoltaic Gas Sensors for Detecting of Ethanol and Mercaptoethanol
The purpose of this experimental study is an extending the number of detectable gases, based on the observed photovoltaic gas sensitivity effect between porous and crystalline silicon at a room temperature of experiment. We researched these smart sensors for detections of ethanol and mercaptoethanol molecules in wide range of the measurement concentrations with the maximum possible accuracy. The sensitivity properties of these photovoltaic ethanol and mercaptoethanol sensors in dependence on light intensities and gas concentrations were analyzed. Photo-EMF sensitivities corresponding to gas concentrations in the range from 1 ppm to 900 ppm can be maximized by controlling the intensity of illumination light under NI LabView software modules. Our sensors can be useful for the detection of ethanol and mercaptoethanol in a mixture with pure nitrogen.
Yuriy Vashpanov, Department of Automation of Production Processes and Robotics, Odessa National Academia of Food Technology, Odessa, Ukraine.
Gas sensors, Porous and Crystalline Silicon, Heterojunction, Photovoltaic Effect
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Arcticle History
Submitted: Dec. 23, 2015
Accepted: Jan. 15, 2016
Published: Feb. 19, 2016
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