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Effect of Composition and Annealing on Structural and Optical Properties of (ZnO)1-X (TiO2)X Thin Films Prepared by Sol-Gel Method | ||
| Kirkuk Journal of Science | ||
| Article 1, Volume 10, Issue 3, 2015, Pages 303-319 PDF (0 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.32894/kujss.2015.105031 | ||
| Authors | ||
| Huda L. Nida; Abdulkader J. Muhammad; Ali I. Salih | ||
| Department of Physics / College of Science / University of Kirkuk | ||
| Abstract | ||
| The study describes effect of composition parameter, x, and annealing-temperature, Ta, on structural,and opticalproperties of (ZnO)1-x(TiO2)x thin-films prepared by sol-gel method. Experimental results are explained and theoretical equations are suggested for optical-energy-gap, Eg, and Urbach-energy, Eu in terms of their variation with (x) and (Ta).With increased xand Ta, Eg decreases whereas Eu increases. Thebehavior of Egwas explainedby evokingthatincreasingx will randomize thecrystalperiodicity, andthat annealingtemperature(400,500, and600)⁰Crelaxes the structuremoretowardsbettercrystallineforms. The increase of Eu with increased x was attributed to the lower mass of Ti ions as compared to that of Zn ions. Generally, makingcompositesdestroysthecrystalinityobservedin pureZnO andpureTiO2films butannealingdoesimprovethe qualityof the filmintermsofitsdegreeofcrystal structure. | ||
| Keywords | ||
| ZnO; TiO; film; composition; annealing; Energy; gap; Urbach | ||
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