Cargando…

Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size

This study addresses the relationship between material morphology (size, growth parameters and interfaces) and optical emissions in ZnO through an experimental approach, including the effect of different material dimensions from bulk to nano-size, and different excitations, from optical sources to i...

Descripción completa

Detalles Bibliográficos
Autores principales: Crapanzano, Roberta, Villa, Irene, Mostoni, Silvia, D’Arienzo, Massimiliano, Di Credico, Barbara, Fasoli, Mauro, Scotti, Roberto, Vedda, Anna
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7601266/
https://www.ncbi.nlm.nih.gov/pubmed/33036427
http://dx.doi.org/10.3390/nano10101983
_version_ 1783603368924545024
author Crapanzano, Roberta
Villa, Irene
Mostoni, Silvia
D’Arienzo, Massimiliano
Di Credico, Barbara
Fasoli, Mauro
Scotti, Roberto
Vedda, Anna
author_facet Crapanzano, Roberta
Villa, Irene
Mostoni, Silvia
D’Arienzo, Massimiliano
Di Credico, Barbara
Fasoli, Mauro
Scotti, Roberto
Vedda, Anna
author_sort Crapanzano, Roberta
collection PubMed
description This study addresses the relationship between material morphology (size, growth parameters and interfaces) and optical emissions in ZnO through an experimental approach, including the effect of different material dimensions from bulk to nano-size, and different excitations, from optical sources to ionizing radiation. Silica supported ZnO nanoparticles and ligand capped ZnO nanoparticles are synthesized through a sol–gel process and hot injection method, respectively. Their optical properties are investigated by radioluminescence, steady-state and time-resolved photoluminescence, and compared to those of commercial micrometric powders and of a bulk single crystal. The Gaussian spectral reconstruction of all emission spectra highlights the occurrence of the same emission bands for all samples, comprising one ultraviolet excitonic peak and four visible defect-related components, whose relative intensities and time dynamics vary with the material parameters and the measurement conditions. The results demonstrate that a wide range of color outputs can be obtained by tuning synthesis conditions and size of pure ZnO nanoparticles, with favorable consequences for the engineering of optical devices based on this material.
format Online
Article
Text
id pubmed-7601266
institution National Center for Biotechnology Information
language English
publishDate 2020
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-76012662020-11-01 Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size Crapanzano, Roberta Villa, Irene Mostoni, Silvia D’Arienzo, Massimiliano Di Credico, Barbara Fasoli, Mauro Scotti, Roberto Vedda, Anna Nanomaterials (Basel) Article This study addresses the relationship between material morphology (size, growth parameters and interfaces) and optical emissions in ZnO through an experimental approach, including the effect of different material dimensions from bulk to nano-size, and different excitations, from optical sources to ionizing radiation. Silica supported ZnO nanoparticles and ligand capped ZnO nanoparticles are synthesized through a sol–gel process and hot injection method, respectively. Their optical properties are investigated by radioluminescence, steady-state and time-resolved photoluminescence, and compared to those of commercial micrometric powders and of a bulk single crystal. The Gaussian spectral reconstruction of all emission spectra highlights the occurrence of the same emission bands for all samples, comprising one ultraviolet excitonic peak and four visible defect-related components, whose relative intensities and time dynamics vary with the material parameters and the measurement conditions. The results demonstrate that a wide range of color outputs can be obtained by tuning synthesis conditions and size of pure ZnO nanoparticles, with favorable consequences for the engineering of optical devices based on this material. MDPI 2020-10-07 /pmc/articles/PMC7601266/ /pubmed/33036427 http://dx.doi.org/10.3390/nano10101983 Text en © 2020 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Crapanzano, Roberta
Villa, Irene
Mostoni, Silvia
D’Arienzo, Massimiliano
Di Credico, Barbara
Fasoli, Mauro
Scotti, Roberto
Vedda, Anna
Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size
title Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size
title_full Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size
title_fullStr Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size
title_full_unstemmed Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size
title_short Morphology Related Defectiveness in ZnO Luminescence: From Bulk to Nano-Size
title_sort morphology related defectiveness in zno luminescence: from bulk to nano-size
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7601266/
https://www.ncbi.nlm.nih.gov/pubmed/33036427
http://dx.doi.org/10.3390/nano10101983
work_keys_str_mv AT crapanzanoroberta morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT villairene morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT mostonisilvia morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT darienzomassimiliano morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT dicredicobarbara morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT fasolimauro morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT scottiroberto morphologyrelateddefectivenessinznoluminescencefrombulktonanosize
AT veddaanna morphologyrelateddefectivenessinznoluminescencefrombulktonanosize