Open AccessEffect of Aging Time on the Synthesis of Fe-doped TiO2 Thin Films by Spin Coating Method
Author(s) -
Dahyunir Dahlan
Publication year - 2016
Publication title -
kne engineering
Language(s) - English
Resource type - Journals
ISSN - 2518-6841
DOI - 10.18502/keg.v0i0.500
Subject(s) - spin coating , materials science , anatase , scanning electron microscope , thin film , coating , layer (electronics) , analytical chemistry (journal) , phase (matter) , chemical engineering , crystallography , nanotechnology , composite material , chemistry , organic chemistry , photocatalysis , catalysis , engineering
The synthesis of Fe-doped TiO 2 thin film using spin coating method was studied. Effects of aging time on the deposited thin film were investigated. Titanium butoxide (C 16 H 36 O 4 Ti) as a precursor solution was mixed with the FeCl 3 . 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 2 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 2 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.