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Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method

Since ZnO nanoparticles (NPs) possess a variety of intrinsic defects, they can provide a wide spectrum of visible emission, without adding any impurity or any doping atoms. They are attracting more and more interest as a material for light sources and energy downshifting systems. However, defect emi...

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Autores principales: Apostoluk, Alexandra, Zhu, Yao, Gautier, Pierrick, Valette, Audrey, Bluet, Jean-Marie, Cornier, Thibaut, Masenelli, Bruno, Daniele, Stephane
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420257/
https://www.ncbi.nlm.nih.gov/pubmed/37570103
http://dx.doi.org/10.3390/ma16155400
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author Apostoluk, Alexandra
Zhu, Yao
Gautier, Pierrick
Valette, Audrey
Bluet, Jean-Marie
Cornier, Thibaut
Masenelli, Bruno
Daniele, Stephane
author_facet Apostoluk, Alexandra
Zhu, Yao
Gautier, Pierrick
Valette, Audrey
Bluet, Jean-Marie
Cornier, Thibaut
Masenelli, Bruno
Daniele, Stephane
author_sort Apostoluk, Alexandra
collection PubMed
description Since ZnO nanoparticles (NPs) possess a variety of intrinsic defects, they can provide a wide spectrum of visible emission, without adding any impurity or any doping atoms. They are attracting more and more interest as a material for light sources and energy downshifting systems. However, defect emission with a high luminescence quantum efficiency (PL QY) is difficult to obtain. Here, we present the co-precipitation synthesis parameters permitting to attain ZnO NPs with highly visible PL QYs. We found that the nature of zinc precursors and alkaline hydroxide (KOH or LiOH) used in this method affects the emission spectra and the PL QY of the as-grown ZnO NPs. LiOH is found to have an advantageous effect on the visible emission efficiency when added during the synthesis of the ZnO NPs. More precisely, LiOH permits to increase the emission efficiency in the visible up to 13%. We discuss the effects of the nanoparticle size, the morphology and the surface stabilization on the enhancement of the luminescent emission efficiency. Various spectral contributions to the luminescent emission were also examined, in order to achieve a control of the defect emission to increase its efficiency.
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spelling pubmed-104202572023-08-12 Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method Apostoluk, Alexandra Zhu, Yao Gautier, Pierrick Valette, Audrey Bluet, Jean-Marie Cornier, Thibaut Masenelli, Bruno Daniele, Stephane Materials (Basel) Article Since ZnO nanoparticles (NPs) possess a variety of intrinsic defects, they can provide a wide spectrum of visible emission, without adding any impurity or any doping atoms. They are attracting more and more interest as a material for light sources and energy downshifting systems. However, defect emission with a high luminescence quantum efficiency (PL QY) is difficult to obtain. Here, we present the co-precipitation synthesis parameters permitting to attain ZnO NPs with highly visible PL QYs. We found that the nature of zinc precursors and alkaline hydroxide (KOH or LiOH) used in this method affects the emission spectra and the PL QY of the as-grown ZnO NPs. LiOH is found to have an advantageous effect on the visible emission efficiency when added during the synthesis of the ZnO NPs. More precisely, LiOH permits to increase the emission efficiency in the visible up to 13%. We discuss the effects of the nanoparticle size, the morphology and the surface stabilization on the enhancement of the luminescent emission efficiency. Various spectral contributions to the luminescent emission were also examined, in order to achieve a control of the defect emission to increase its efficiency. MDPI 2023-08-01 /pmc/articles/PMC10420257/ /pubmed/37570103 http://dx.doi.org/10.3390/ma16155400 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Apostoluk, Alexandra
Zhu, Yao
Gautier, Pierrick
Valette, Audrey
Bluet, Jean-Marie
Cornier, Thibaut
Masenelli, Bruno
Daniele, Stephane
Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method
title Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method
title_full Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method
title_fullStr Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method
title_full_unstemmed Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method
title_short Improved Visible Emission from ZnO Nanoparticles Synthesized via the Co-Precipitation Method
title_sort improved visible emission from zno nanoparticles synthesized via the co-precipitation method
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10420257/
https://www.ncbi.nlm.nih.gov/pubmed/37570103
http://dx.doi.org/10.3390/ma16155400
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