Abstract
<p>The synthesis of Fe-doped TiO<sub>2</sub> thin film using spin coating method was studied. Effects of aging time on the deposited thin film were investigated. Titanium butoxide (C<sub>16</sub>H<sub>36</sub>O<sub>4</sub>Ti) as a precursor solution was mixed with the FeCl<sub>3</sub>. Spin coating process was carried out on three types of precursor solution: (1) spin-coating process performed immediately after the precursor solution was made, (2) spin-coating process performed after solution was aged for 24 hours, (3) aged for 24 and (4) spin-coating after aging the precursor for 72 hours. Heating was carried out on the resulting thin film at temperature of 400 °C. The morphology of TiO<sub>2</sub> layers was characterized using Scanning Electron Microscope (SEM) and Atomic Force Microscope (AFM). Elemental and phase composition of the films was determined using EDX and X-ray diffraction (XRD). We found that the best TiO<sub>2</sub> layer is obtained when spin-coating process is done after aging the precursor for 72 hours. The layer shows a more uniform particle distribution on the substrate and a more monodisperse particle size dominated by the anatase phase.</p>
Highlights
IntroductionTiO2 coating has been investigated by many researchers because TiO2is stable, nontoxic with band gap of 3.21 eV making it possible for photovoltaic [1] and photocatalytic [2] application
By using Scanning Electron Microscope (SEM) technique, micrograph obtained at magnification of 40,000x shows that TiO2 layer looks flat and solid
All of the samples prepared regardless of its treatment and modification ((1) spin-coating process performed immediately after the precursor solution was made, (2) spin-coating process performed after solution was aged for 24 hours, (3) aged for 24 and (4) spin-coating after aging the precursor for 72 hours) have the same morphology when viewed with SEM prior to the aging time
Summary
TiO2 coating has been investigated by many researchers because TiO2is stable, nontoxic with band gap of 3.21 eV making it possible for photovoltaic [1] and photocatalytic [2] application. How to cite this article: Dahyunir Dahlan and Muhammad Anshori, “Effect of Aging Time on the Synthesis of Fe-doped TiO2 Thin Films by Spin Coating Method,” KnE Engineering, vol 2016, 6 pages. It was found that the Fe-doped TiO2 with aging time for precursor of 72 hours with annealing temperature of 400oC produced better TiO2 thin film. This finding may find useful in potential application in TiO2 utilizing thin film such as photocatalytic and photovoltaic applications
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