Optical properties of erbium doped tellurite glass with different NaCL composition

A series of glasses based on (79.5-x)TeO2-20Na2O-(x)NaCl-0.5Er2O3 (where x = 0.0, 2.5, 5.0, 7.5 and 10.0 mol %) are successfully prepared by melt quenching technique. The amorphous nature of the glass have been characterized using X-ray Diffraction technique and the optical properties are characteri...

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Main Author: Ismail, Izzah Afifah
Format: Thesis
Language:English
Published: 2014
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Online Access:http://eprints.utm.my/id/eprint/47966/25/IzzahAfifahIsmailMFS2014.pdf
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spelling my-utm-ep.479662017-08-02T05:47:24Z Optical properties of erbium doped tellurite glass with different NaCL composition 2014-06 Ismail, Izzah Afifah Q Science (General) A series of glasses based on (79.5-x)TeO2-20Na2O-(x)NaCl-0.5Er2O3 (where x = 0.0, 2.5, 5.0, 7.5 and 10.0 mol %) are successfully prepared by melt quenching technique. The amorphous nature of the glass have been characterized using X-ray Diffraction technique and the optical properties are characterized by means of UVVis- NIR and photoluminescence spectroscopy. The value of the optical band gap and the Urbach energy are calculated from the absorption edge data. The value of optical band gap lies between 2.99 eV and 3.13 eV for the indirect transition whereas the value of Urbach energy varies from 0.17 eV to 0.27 eV. From the luminescence spectrum, it is found that the luminescence emission spectra centered at 435 nm, 475 nm and 563 nm which assigned to the transition of 2H11/2, 4S3/2 and 4F9/2 to 4I15/2 respectively under 375 nm of excitation wavelength. Most properties observed to be dependent in a systematic manner on the NaCl content 2014-06 Thesis http://eprints.utm.my/id/eprint/47966/ http://eprints.utm.my/id/eprint/47966/25/IzzahAfifahIsmailMFS2014.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 Q Science (General)
spellingShingle Q Science (General)
Ismail, Izzah Afifah
Optical properties of erbium doped tellurite glass with different NaCL composition
description A series of glasses based on (79.5-x)TeO2-20Na2O-(x)NaCl-0.5Er2O3 (where x = 0.0, 2.5, 5.0, 7.5 and 10.0 mol %) are successfully prepared by melt quenching technique. The amorphous nature of the glass have been characterized using X-ray Diffraction technique and the optical properties are characterized by means of UVVis- NIR and photoluminescence spectroscopy. The value of the optical band gap and the Urbach energy are calculated from the absorption edge data. The value of optical band gap lies between 2.99 eV and 3.13 eV for the indirect transition whereas the value of Urbach energy varies from 0.17 eV to 0.27 eV. From the luminescence spectrum, it is found that the luminescence emission spectra centered at 435 nm, 475 nm and 563 nm which assigned to the transition of 2H11/2, 4S3/2 and 4F9/2 to 4I15/2 respectively under 375 nm of excitation wavelength. Most properties observed to be dependent in a systematic manner on the NaCl content
format Thesis
qualification_level Master's degree
author Ismail, Izzah Afifah
author_facet Ismail, Izzah Afifah
author_sort Ismail, Izzah Afifah
title Optical properties of erbium doped tellurite glass with different NaCL composition
title_short Optical properties of erbium doped tellurite glass with different NaCL composition
title_full Optical properties of erbium doped tellurite glass with different NaCL composition
title_fullStr Optical properties of erbium doped tellurite glass with different NaCL composition
title_full_unstemmed Optical properties of erbium doped tellurite glass with different NaCL composition
title_sort optical properties of erbium doped tellurite glass with different nacl composition
granting_institution Universiti Teknologi Malaysia, Faculty of Science
granting_department Faculty of Science
publishDate 2014
url http://eprints.utm.my/id/eprint/47966/25/IzzahAfifahIsmailMFS2014.pdf
_version_ 1747817275055931392