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Ethanol Sensing Characterization of ZnO Thin Films Prepared by Spray Paralysis Technique | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 20, Issue 1, 2009, Pages 79-90 | ||
| Author | ||
| Ali J. Mohammad | ||
| Abstract | ||
| In this work, ZnO thin films were prepared by spray pyrolysis technique with different molarities (0.3 , 0.5 , 0.6 ,and 0.7) M , were introduced to determine the optimum characteristics of the prepared samples and their sensing properties to the ethanol vapor for three different concentrations (3 , 4 and 5) % and flow rates ( 0.2 , 0.3 , 0.4 , 0.6 and 0.8 ) ℓ / min , and the effect of morality on these properties include I – V characteristics , sensing current and sensitivity . morality and concentration increasing (3 -5)% caused to increased the sensing current (100 -700) A when it exposed by a vapor in one minute with carrier gas (0.4)ℓ/min flow rate of about and the sensitivity clearly decreased at (4% and 5% ) concentration . The sensor Ohmic – like behavior . | ||
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