Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis

Pure ZnO and ZnO: 2%Y:x%Li (x = 0, 3, 5 and 7 at.%) thin films have been successfully prepared onto glass substrates under optimized conditions by spray pyrolysis technique at 450 ºC and their suitability for the fabrication of efficient optoelectronic devices is demonstrated. The samples have been...

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Autores: Bazta, Otman, Urbieta Quiroga, Ana Irene, Piqueras De Noriega, Francisco Javier, Fernández Sánchez, Paloma, Addou, Mohammed, Calvino, J. J., Hungría, A. B.
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/5961
Acceso en línea:https://hdl.handle.net/20.500.14352/5961
Access Level:acceso abierto
Palabra clave:538.9
Zinc-oxide
Hydrothermal synthesis
Electrical-properties
Optical-properties
Nanoparticles
Temperature
Photoluminescence
Microstructure
Defects
Surface
Thin films
Li-Y doped ZnO
Optical properties
Luminescence
Spray pyrolysis synthesis
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/5961
network_acronym_str ES
network_name_str España
repository_id_str
spelling Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysisBazta, OtmanUrbieta Quiroga, Ana IrenePiqueras De Noriega, Francisco JavierFernández Sánchez, PalomaAddou, MohammedCalvino, J. J.Hungría, A. B.538.9Zinc-oxideHydrothermal synthesisElectrical-propertiesOptical-propertiesNanoparticlesTemperaturePhotoluminescenceMicrostructureDefectsSurfaceThin filmsLi-Y doped ZnOOptical propertiesLuminescenceSpray pyrolysis synthesisFísica de materialesFísica del estado sólido2211 Física del Estado SólidoPure ZnO and ZnO: 2%Y:x%Li (x = 0, 3, 5 and 7 at.%) thin films have been successfully prepared onto glass substrates under optimized conditions by spray pyrolysis technique at 450 ºC and their suitability for the fabrication of efficient optoelectronic devices is demonstrated. The samples have been characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), UV-Visible absorption spectroscopy photoluminescence (PL) and Raman spectroscopy (RS), in order to investigate the effect of Y-Li co-doping on the structure, surface morphology, and optical features of the thin films. The films crystallized into a hexagonal structure, with a preferred orientation along the c-axis. No additional phases have been observed. SEM micrographs showed that Y and Li co-doping plays a key role in the grain size and morphology of the films. The optical study via transmittance and absorption measurements within the UV-vis region revealed that the films are highly transparent (82-90%). The optical bandgap (E-g) depends on the concentration of lithium added, which is explained by the Burstein-Moss (BM) effect. The PL measurements at room temperature under excitation with 325 nm wavelength, showed an appreciable improvement of ultraviolet emission by increasing the Li co-doping concentration. This enhancement reaches a maximum at 5 at.% Li content, and decreases after further increase in Li content. Raman scattering spectra were also carried out and revealed the presence of the wurtzite phase of ZnO exclusively. (C) 2019 Elsevier B.V. All rights reserved.Elsevier Science SAUniversidad Complutense de Madrid20192019-11-0520192019-11-05journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/5961reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución-NoComercial-SinDerivadas 3.0 Españahttps://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/59612026-06-02T12:44:21Z
dc.title.none.fl_str_mv Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
title Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
spellingShingle Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
Bazta, Otman
538.9
Zinc-oxide
Hydrothermal synthesis
Electrical-properties
Optical-properties
Nanoparticles
Temperature
Photoluminescence
Microstructure
Defects
Surface
Thin films
Li-Y doped ZnO
Optical properties
Luminescence
Spray pyrolysis synthesis
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
title_full Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
title_fullStr Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
title_full_unstemmed Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
title_sort Enhanced UV emission of Li-Y co-doped ZnO thin films via spray pyrolysis
dc.creator.none.fl_str_mv Bazta, Otman
Urbieta Quiroga, Ana Irene
Piqueras De Noriega, Francisco Javier
Fernández Sánchez, Paloma
Addou, Mohammed
Calvino, J. J.
Hungría, A. B.
author Bazta, Otman
author_facet Bazta, Otman
Urbieta Quiroga, Ana Irene
Piqueras De Noriega, Francisco Javier
Fernández Sánchez, Paloma
Addou, Mohammed
Calvino, J. J.
Hungría, A. B.
author_role author
author2 Urbieta Quiroga, Ana Irene
Piqueras De Noriega, Francisco Javier
Fernández Sánchez, Paloma
Addou, Mohammed
Calvino, J. J.
Hungría, A. B.
author2_role author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Zinc-oxide
Hydrothermal synthesis
Electrical-properties
Optical-properties
Nanoparticles
Temperature
Photoluminescence
Microstructure
Defects
Surface
Thin films
Li-Y doped ZnO
Optical properties
Luminescence
Spray pyrolysis synthesis
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Zinc-oxide
Hydrothermal synthesis
Electrical-properties
Optical-properties
Nanoparticles
Temperature
Photoluminescence
Microstructure
Defects
Surface
Thin films
Li-Y doped ZnO
Optical properties
Luminescence
Spray pyrolysis synthesis
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description Pure ZnO and ZnO: 2%Y:x%Li (x = 0, 3, 5 and 7 at.%) thin films have been successfully prepared onto glass substrates under optimized conditions by spray pyrolysis technique at 450 ºC and their suitability for the fabrication of efficient optoelectronic devices is demonstrated. The samples have been characterized by X-ray diffraction (XRD), Scanning electron microscopy (SEM), UV-Visible absorption spectroscopy photoluminescence (PL) and Raman spectroscopy (RS), in order to investigate the effect of Y-Li co-doping on the structure, surface morphology, and optical features of the thin films. The films crystallized into a hexagonal structure, with a preferred orientation along the c-axis. No additional phases have been observed. SEM micrographs showed that Y and Li co-doping plays a key role in the grain size and morphology of the films. The optical study via transmittance and absorption measurements within the UV-vis region revealed that the films are highly transparent (82-90%). The optical bandgap (E-g) depends on the concentration of lithium added, which is explained by the Burstein-Moss (BM) effect. The PL measurements at room temperature under excitation with 325 nm wavelength, showed an appreciable improvement of ultraviolet emission by increasing the Li co-doping concentration. This enhancement reaches a maximum at 5 at.% Li content, and decreases after further increase in Li content. Raman scattering spectra were also carried out and revealed the presence of the wurtzite phase of ZnO exclusively. (C) 2019 Elsevier B.V. All rights reserved.
publishDate 2019
dc.date.none.fl_str_mv 2019
2019-11-05
2019
2019-11-05
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/5961
url https://hdl.handle.net/20.500.14352/5961
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Atribución-NoComercial-SinDerivadas 3.0 España
https://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier Science SA
publisher.none.fl_str_mv Elsevier Science SA
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408144288907264
score 15,301603

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