Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide

A study had successfully been conducted to determine the effects of samarium addition on the crystalline phase and spectroscopic properties of coppercontaining borophosphate ceramics with nominal composition of 10CuO 30B2O3 (60 )P2O5 Sm2O3, where 0.1, 0.3, 0.5, 1.0, 1.5 and 2.0 mol% prepared by soli...

Full description

Saved in:

Bibliographic Details
Main Author:	Chye, Mei Yun
Format:	Thesis
Language:	English
Published:	2017
Subjects:	QC Physics
Online Access:	http://eprints.utm.my/id/eprint/80958/1/ChyeMeiYunMFS2017.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-utm-ep.80958
record_format	uketd_dc
spelling	my-utm-ep.809582019-07-24T00:13:23Z Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide 2017-05 Chye, Mei Yun QC Physics A study had successfully been conducted to determine the effects of samarium addition on the crystalline phase and spectroscopic properties of coppercontaining borophosphate ceramics with nominal composition of 10CuO 30B2O3 (60 )P2O5 Sm2O3, where 0.1, 0.3, 0.5, 1.0, 1.5 and 2.0 mol% prepared by solid state reaction. The ceramic samples had been measured by X-ray Diffraction (XRD), Fourier Transform Infrared spectrometer (FTIR), ultraviolet-visible spectrometer (UV-Vis-NIR) and photoluminescence spectrophotometer (PL). All ceramic samples are found to be single crystalline of boron phosphate (BPO4) regardless to the Sm2O3 concentration used. Diffraction peak intensities, average crystallite size and lattice parameters are found to fluctuate due to the addition of Sm2O3. FTIR spectra showed that the addition of Sm2O3 to the current ceramic host has no influence to the structure features or band positions, only band intensities are observed to increase. UV-Vis-NIR spectra of Sm2O3 doped ceramic samples recorded five absorption peaks where the peaks’ intensities increasing with increasing concentration of Sm2O3. Both the direct and indirect band gaps decrease gradually with the increase in Sm2O3 concentration while the Urbach’s energy shows inverse trend. The luminescence spectra for Sm2O3 doped ceramic samples at the excitation wavelength of 401 nm revealed three emission peaks at 560 nm (4G5/2⟶ 6H5/2), 600 nm (4G5/2⟶ 6H7/2) and 670 nm (4G5/2⟶ 6H9/2). The peak at 600 nm which attributed to the orange emission is found to be most prominent for all of the ceramic samples and this peak is found to be shifted slightly during the addition of Sm2O3. Quenching effect is identified for the ceramic host doped with 1.5 mol% of Sm2O3. Therefore, Sm2O3 at 1.0 mol% of doping is the maximum doping concentration to the current ceramic sample and the good correlation between the doping and host system suggested it to be used for developing orange LED and fluorescent display devices. 2017-05 Thesis http://eprints.utm.my/id/eprint/80958/ http://eprints.utm.my/id/eprint/80958/1/ChyeMeiYunMFS2017.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:124859 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 Chye, Mei Yun Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
description	A study had successfully been conducted to determine the effects of samarium addition on the crystalline phase and spectroscopic properties of coppercontaining borophosphate ceramics with nominal composition of 10CuO 30B2O3 (60 )P2O5 Sm2O3, where 0.1, 0.3, 0.5, 1.0, 1.5 and 2.0 mol% prepared by solid state reaction. The ceramic samples had been measured by X-ray Diffraction (XRD), Fourier Transform Infrared spectrometer (FTIR), ultraviolet-visible spectrometer (UV-Vis-NIR) and photoluminescence spectrophotometer (PL). All ceramic samples are found to be single crystalline of boron phosphate (BPO4) regardless to the Sm2O3 concentration used. Diffraction peak intensities, average crystallite size and lattice parameters are found to fluctuate due to the addition of Sm2O3. FTIR spectra showed that the addition of Sm2O3 to the current ceramic host has no influence to the structure features or band positions, only band intensities are observed to increase. UV-Vis-NIR spectra of Sm2O3 doped ceramic samples recorded five absorption peaks where the peaks’ intensities increasing with increasing concentration of Sm2O3. Both the direct and indirect band gaps decrease gradually with the increase in Sm2O3 concentration while the Urbach’s energy shows inverse trend. The luminescence spectra for Sm2O3 doped ceramic samples at the excitation wavelength of 401 nm revealed three emission peaks at 560 nm (4G5/2⟶ 6H5/2), 600 nm (4G5/2⟶ 6H7/2) and 670 nm (4G5/2⟶ 6H9/2). The peak at 600 nm which attributed to the orange emission is found to be most prominent for all of the ceramic samples and this peak is found to be shifted slightly during the addition of Sm2O3. Quenching effect is identified for the ceramic host doped with 1.5 mol% of Sm2O3. Therefore, Sm2O3 at 1.0 mol% of doping is the maximum doping concentration to the current ceramic sample and the good correlation between the doping and host system suggested it to be used for developing orange LED and fluorescent display devices.
format	Thesis
qualification_level	Master's degree
author	Chye, Mei Yun
author_facet	Chye, Mei Yun
author_sort	Chye, Mei Yun
title	Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
title_short	Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
title_full	Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
title_fullStr	Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
title_full_unstemmed	Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
title_sort	crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide
granting_institution	Universiti Teknologi Malaysia, Faculty of Science
granting_department	Faculty of Science
publishDate	2017
url	http://eprints.utm.my/id/eprint/80958/1/ChyeMeiYunMFS2017.pdf
_version_	1747818284246368256

Crystalline phase and spectroscopic properties of copper-containing borophosphate ceramic doped with samarium oxide

Similar Items