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Article
Underwater Sensing Characteristics of a ZnO Thin Film Sensor Prepared by Spray Pyrolysis

Author: A.J. Mohammad
Journal: Iraqi Journal of Applied Physics Letters الرسائل العراقية في الفيزياء التطبيقية ISSN: 1999656X Year: 2008 Volume: 1 Issue: 1 Pages: 24-27
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

In this work, ZnO thin films were prepared by spray pyrolysis technique tofabricate underwater sensors. Results explained that the preparationconditions affect the sensing characteristics and the attenuation in theunderwater environment is dependent of distance from sensing signalsource and its frequency. The prepared sensor was tested in a waterenvironment containing crude oil and it exhibited reasonable results tosense the oil amount.


Article
Optical and Electrical Properties of Zinc Oxide Films Prepared by Spray Pyrolysis

Authors: H. Afifi --- M. Abdel-Naby --- S. El-Hefnawie --- A. Eliewa --- et al.
Journal: Iraqi Journal of Applied Physics المجلة العراقية للفيزياء التطبيقية ISSN: 18132065 23091673 Year: 2010 Volume: 6 Issue: 4 Pages: 23-28
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة

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Abstract

The structural, optical and electrical properties of ZnO:In thin films prepared by spray pyrolysis method are examined. The used spray solution (0.2M) was prepared by adding indium chloride InCl3 to the precursor of zinc acetate dissloved in mixed solution 80% H2O: 20%CH3OH. The XRD patterns for incorporated ZnO film with different concenteration of indium shows three addional peaks (100), (101) and (110) over the only one (002) appeared in pure ZnO. The intensities of these peaks are increased gradually with indium concentration while the (002) peak decrease to its minimum value at 3% In. The resistivity of ZnO films was improved by doping from 2.25x102 E.cm for undoped to the minimum value at 2% doping concentration 2.6x10-2 E.cm. The optical bandgap of all films has no change by In addition and shows sharp absorption edge at 380nm.

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