Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis

Strontium titanate (SrTiO3) thin films sample were prepared by using spray pyrolysis technique onto a glass substrate. The thin films were deposited using various concentrations of 0.2 – 1.0 M strontium nitrate (Sr(NO3)2) and titanium tetraisopropoxide (TTIP) at constant temperature 400ºC and a flow...

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Main Author:	Mat, Siti Aisah
Format:	Thesis
Language:	English
Published:	2014
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/48931/25/SitiAisahMatMFS2014.pdf
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spelling	my-utm-ep.489312017-08-30T09:31:11Z Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis 2014-02 Mat, Siti Aisah QC Physics Strontium titanate (SrTiO3) thin films sample were prepared by using spray pyrolysis technique onto a glass substrate. The thin films were deposited using various concentrations of 0.2 – 1.0 M strontium nitrate (Sr(NO3)2) and titanium tetraisopropoxide (TTIP) at constant temperature 400ºC and a flow rate of 3 mL/min oxygen carrier gas. The films were annealed at temperature range of 400ºC to 650ºC. The films were characterized using UV-Visible spectrophotometer, X-ray diffractometer (XRD), atomic force microscope (AFM), Fourier transform infra-red spectrometer (FTIR) and photoluminescence (PL) spectrometer. The samples showed a high transmittance of more than 75% in the visible region, with band gap energy in the range of 3.4 eV to 4.0 eV. The band gap energy of the films decreased from 3.9 eV to 3.5 eV as the annealing temperature increased from 400ºC to 500ºC. The films deposited at 400ºC showed an amorphous phase. At an annealing temperature of 450ºC, the thin films sample turned into polycrystalline phase. The intensity of (110) orientation was the dominant phase of strontium titanate at annealing temperature of 650ºC. FTIR measurements showed that symmetrical OH absorption band exists in all the films and Ti-O bonding only can be observed at an annealing temperature 500ºC above. The grain sizes and surface roughness of the films increased with increasing annealing temperatures. In this study, the strontium titanate (SrTiO3) thin films did not show luminescent characteristic. 2014-02 Thesis http://eprints.utm.my/id/eprint/48931/ http://eprints.utm.my/id/eprint/48931/25/SitiAisahMatMFS2014.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Science Faculty of Science
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	QC Physics
spellingShingle	QC Physics Mat, Siti Aisah Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
description	Strontium titanate (SrTiO3) thin films sample were prepared by using spray pyrolysis technique onto a glass substrate. The thin films were deposited using various concentrations of 0.2 – 1.0 M strontium nitrate (Sr(NO3)2) and titanium tetraisopropoxide (TTIP) at constant temperature 400ºC and a flow rate of 3 mL/min oxygen carrier gas. The films were annealed at temperature range of 400ºC to 650ºC. The films were characterized using UV-Visible spectrophotometer, X-ray diffractometer (XRD), atomic force microscope (AFM), Fourier transform infra-red spectrometer (FTIR) and photoluminescence (PL) spectrometer. The samples showed a high transmittance of more than 75% in the visible region, with band gap energy in the range of 3.4 eV to 4.0 eV. The band gap energy of the films decreased from 3.9 eV to 3.5 eV as the annealing temperature increased from 400ºC to 500ºC. The films deposited at 400ºC showed an amorphous phase. At an annealing temperature of 450ºC, the thin films sample turned into polycrystalline phase. The intensity of (110) orientation was the dominant phase of strontium titanate at annealing temperature of 650ºC. FTIR measurements showed that symmetrical OH absorption band exists in all the films and Ti-O bonding only can be observed at an annealing temperature 500ºC above. The grain sizes and surface roughness of the films increased with increasing annealing temperatures. In this study, the strontium titanate (SrTiO3) thin films did not show luminescent characteristic.
format	Thesis
qualification_level	Master's degree
author	Mat, Siti Aisah
author_facet	Mat, Siti Aisah
author_sort	Mat, Siti Aisah
title	Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
title_short	Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
title_full	Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
title_fullStr	Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
title_full_unstemmed	Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
title_sort	structural and optical properties of strontium titanate thin films prepared by spray pyrolysis
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2014
url	http://eprints.utm.my/id/eprint/48931/25/SitiAisahMatMFS2014.pdf
_version_	1747817505566490624

Structural and optical properties of strontium titanate thin films prepared by spray pyrolysis

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