Optical properties of 2D micro-and nanostructures of ZnO:K

ZnO nano- and microstructures doped with K were grown by the Vapor-Solid method. Wires and needles are the main morphology observed, although some structures in the form of ribbons and triangular plates were also obtained. Besides these, ball-shaped structures which grow around a central wire were a...

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Detalles Bibliográficos
Autores: Ariza, Rocío, Urbieta Quiroga, Ana Irene, Solís, Fernando, Fernández Sánchez, Paloma
Tipo de recurso: artículo
Fecha de publicación:2022
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/72744
Acceso en línea:https://hdl.handle.net/20.500.14352/72744
Access Level:acceso abierto
Palabra clave:538.9
Thin-films
Luminescence
Deposition
ZnO
Defects
Optical resonant modes
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
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oai_identifier_str oai:docta.ucm.es:20.500.14352/72744
network_acronym_str ES
network_name_str España
repository_id_str
spelling Optical properties of 2D micro-and nanostructures of ZnO:KAriza, RocíoUrbieta Quiroga, Ana IreneSolís, FernandoFernández Sánchez, Paloma538.9Thin-filmsLuminescenceDepositionZnODefectsOptical resonant modesFísica de materialesFísica del estado sólido2211 Física del Estado SólidoZnO nano- and microstructures doped with K were grown by the Vapor-Solid method. Wires and needles are the main morphology observed, although some structures in the form of ribbons and triangular plates were also obtained. Besides these, ball-shaped structures which grow around a central wire were also detected. Raman and cathodoluminescence investigations suggest that variations in morphology, crystalline quality and luminescence emissions are related to the different lattice positions that K occupies depending on its concentration in the structures. When the amount is low, K ions mainly incorporate as interstitials (K_(i)), whereas K occupies substitutional positions of Zn (K_(Zn)) when the amount of K is increased. Electron Backscattered Diffraction shows that ribbons and triangular plates are oriented in the (0001) direction, which indicates that the growth of this type of morphologies is related to distortions introduced by the K-i since this position favors the growth in the (0001) plane. In the case of the ball-shaped structures, the compositional analysis and Raman spectra show that they consist of K_(2)SO_(4). Finally, the capability of the elongated structures to act as waveguides and optical resonators was investigated. Due to the size of the K ion, practically double that of the Zn, and the different positions it can adopt within the ZnO lattice (K_(i)or K_(Zn)), high distortions are introduced that compromise the resonators performance. Despite this, quality factor (Q) and fineness (F) show acceptable values (80 and 10 at 544 nm, respectively), although smaller than those reported for doping with smaller size alkali, such as Li.MDPI AGUniversidad Complutense de Madrid20222022-11-0320222022-11-03journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/72744reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Atribución 3.0 Españahttps://creativecommons.org/licenses/by/3.0/es/info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/727442026-06-02T12:44:21Z
dc.title.none.fl_str_mv Optical properties of 2D micro-and nanostructures of ZnO:K
title Optical properties of 2D micro-and nanostructures of ZnO:K
spellingShingle Optical properties of 2D micro-and nanostructures of ZnO:K
Ariza, Rocío
538.9
Thin-films
Luminescence
Deposition
ZnO
Defects
Optical resonant modes
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
title_short Optical properties of 2D micro-and nanostructures of ZnO:K
title_full Optical properties of 2D micro-and nanostructures of ZnO:K
title_fullStr Optical properties of 2D micro-and nanostructures of ZnO:K
title_full_unstemmed Optical properties of 2D micro-and nanostructures of ZnO:K
title_sort Optical properties of 2D micro-and nanostructures of ZnO:K
dc.creator.none.fl_str_mv Ariza, Rocío
Urbieta Quiroga, Ana Irene
Solís, Fernando
Fernández Sánchez, Paloma
author Ariza, Rocío
author_facet Ariza, Rocío
Urbieta Quiroga, Ana Irene
Solís, Fernando
Fernández Sánchez, Paloma
author_role author
author2 Urbieta Quiroga, Ana Irene
Solís, Fernando
Fernández Sánchez, Paloma
author2_role author
author
author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 538.9
Thin-films
Luminescence
Deposition
ZnO
Defects
Optical resonant modes
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
topic 538.9
Thin-films
Luminescence
Deposition
ZnO
Defects
Optical resonant modes
Física de materiales
Física del estado sólido
2211 Física del Estado Sólido
description ZnO nano- and microstructures doped with K were grown by the Vapor-Solid method. Wires and needles are the main morphology observed, although some structures in the form of ribbons and triangular plates were also obtained. Besides these, ball-shaped structures which grow around a central wire were also detected. Raman and cathodoluminescence investigations suggest that variations in morphology, crystalline quality and luminescence emissions are related to the different lattice positions that K occupies depending on its concentration in the structures. When the amount is low, K ions mainly incorporate as interstitials (K_(i)), whereas K occupies substitutional positions of Zn (K_(Zn)) when the amount of K is increased. Electron Backscattered Diffraction shows that ribbons and triangular plates are oriented in the (0001) direction, which indicates that the growth of this type of morphologies is related to distortions introduced by the K-i since this position favors the growth in the (0001) plane. In the case of the ball-shaped structures, the compositional analysis and Raman spectra show that they consist of K_(2)SO_(4). Finally, the capability of the elongated structures to act as waveguides and optical resonators was investigated. Due to the size of the K ion, practically double that of the Zn, and the different positions it can adopt within the ZnO lattice (K_(i)or K_(Zn)), high distortions are introduced that compromise the resonators performance. Despite this, quality factor (Q) and fineness (F) show acceptable values (80 and 10 at 544 nm, respectively), although smaller than those reported for doping with smaller size alkali, such as Li.
publishDate 2022
dc.date.none.fl_str_mv 2022
2022-11-03
2022
2022-11-03
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/20.500.14352/72744
url https://hdl.handle.net/20.500.14352/72744
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 3.0 España
https://creativecommons.org/licenses/by/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 3.0 España
https://creativecommons.org/licenses/by/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv MDPI AG
publisher.none.fl_str_mv MDPI AG
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
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score 15,298079

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