Luminescent properties of ZnO powders synthesized by isovalent method

Zinc oxide powders have been prepared by the isovalent substitution method by means of high-temperature annealing of a zinc sulfide powder synthesized by a chemical method. Investigation of photoluminescence (PL) spectra in dependence on annealing temperature varied from 870 to 1050С has made it po...

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Autores principales:	Goglidze, Tatiana, Dementiev, Igor, Coval, Andrei, Nedeoglo, Natalia, Nedeoglo, Dumitru
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2016
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/481cee4509814838b7e3c694017c3089
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spelling	oai:doaj.org-article:481cee4509814838b7e3c694017c30892021-11-21T11:57:39ZLuminescent properties of ZnO powders synthesized by isovalent method 535.332537-63651810-648Xhttps://doaj.org/article/481cee4509814838b7e3c694017c30892016-06-01T00:00:00Zhttps://mjps.nanotech.md/archive/2016/article/48836https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365Zinc oxide powders have been prepared by the isovalent substitution method by means of high-temperature annealing of a zinc sulfide powder synthesized by a chemical method. Investigation of photoluminescence (PL) spectra in dependence on annealing temperature varied from 870 to 1050С has made it possible to find the temperature range of 920–950С for the most active isovalent substitution of oxygen atoms for sulfur atoms and the formation of a ZnOS phase. X-ray diffraction analysis has revealed that the powder with crystal lattice parameters ао = 0.3249 nm and со = 0.5206 nm and the ratio of со/ао = 1.60, which are characteristic of zinc oxide crystals, is synthesized at the maximum annealing temperature. It has been found that the maximum of a structureless PL band in the spectrum for the ZnO powder at room temperature is localized at 500 nm. It has been supposed that the band is caused by ―free electron–acceptor‖ radiative transitions, where the acceptor level is 0.95 eV above the valence band edge. Goglidze, TatianaDementiev, IgorCoval, AndreiNedeoglo, NataliaNedeoglo, DumitruD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 15, Iss 1-2, Pp 5-9 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Goglidze, Tatiana Dementiev, Igor Coval, Andrei Nedeoglo, Natalia Nedeoglo, Dumitru Luminescent properties of ZnO powders synthesized by isovalent method
description	Zinc oxide powders have been prepared by the isovalent substitution method by means of high-temperature annealing of a zinc sulfide powder synthesized by a chemical method. Investigation of photoluminescence (PL) spectra in dependence on annealing temperature varied from 870 to 1050С has made it possible to find the temperature range of 920–950С for the most active isovalent substitution of oxygen atoms for sulfur atoms and the formation of a ZnOS phase. X-ray diffraction analysis has revealed that the powder with crystal lattice parameters ао = 0.3249 nm and со = 0.5206 nm and the ratio of со/ао = 1.60, which are characteristic of zinc oxide crystals, is synthesized at the maximum annealing temperature. It has been found that the maximum of a structureless PL band in the spectrum for the ZnO powder at room temperature is localized at 500 nm. It has been supposed that the band is caused by ―free electron–acceptor‖ radiative transitions, where the acceptor level is 0.95 eV above the valence band edge.
format	article
author	Goglidze, Tatiana Dementiev, Igor Coval, Andrei Nedeoglo, Natalia Nedeoglo, Dumitru
author_facet	Goglidze, Tatiana Dementiev, Igor Coval, Andrei Nedeoglo, Natalia Nedeoglo, Dumitru
author_sort	Goglidze, Tatiana
title	Luminescent properties of ZnO powders synthesized by isovalent method
title_short	Luminescent properties of ZnO powders synthesized by isovalent method
title_full	Luminescent properties of ZnO powders synthesized by isovalent method
title_fullStr	Luminescent properties of ZnO powders synthesized by isovalent method
title_full_unstemmed	Luminescent properties of ZnO powders synthesized by isovalent method
title_sort	luminescent properties of zno powders synthesized by isovalent method
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2016
url	https://doaj.org/article/481cee4509814838b7e3c694017c3089
work_keys_str_mv	AT goglidzetatiana luminescentpropertiesofznopowderssynthesizedbyisovalentmethod AT dementievigor luminescentpropertiesofznopowderssynthesizedbyisovalentmethod AT covalandrei luminescentpropertiesofznopowderssynthesizedbyisovalentmethod AT nedeoglonatalia luminescentpropertiesofznopowderssynthesizedbyisovalentmethod AT nedeoglodumitru luminescentpropertiesofznopowderssynthesizedbyisovalentmethod
_version_	1718419361066123264

Luminescent properties of ZnO powders synthesized by isovalent method

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