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Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics

A glass phosphor is an attractive material for applications in radiation detections because of its high workability and availability with a wide range of chemical compositions. Recently, X-ray-induced luminescence of glasses containing various luminescent activators are actively investigated worldwi...

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Autores principales: Shiratori, Daiki, Masai, Hirokazu, Kato, Takumi, Okada, Go, Nakauchi, Daisuke, Kawaguchi, Noriaki, Yanagida, Takayuki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7722858/
https://www.ncbi.nlm.nih.gov/pubmed/33293606
http://dx.doi.org/10.1038/s41598-020-78510-z
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author Shiratori, Daiki
Masai, Hirokazu
Kato, Takumi
Okada, Go
Nakauchi, Daisuke
Kawaguchi, Noriaki
Yanagida, Takayuki
author_facet Shiratori, Daiki
Masai, Hirokazu
Kato, Takumi
Okada, Go
Nakauchi, Daisuke
Kawaguchi, Noriaki
Yanagida, Takayuki
author_sort Shiratori, Daiki
collection PubMed
description A glass phosphor is an attractive material for applications in radiation detections because of its high workability and availability with a wide range of chemical compositions. Recently, X-ray-induced luminescence of glasses containing various luminescent activators are actively investigated worldwide. In applications as phosphor, tailoring valence state of activators, which can take multiple valence states in glass, is very important. In this research, we studied effects of glass melting atmosphere on the valence state of copper-activator ion in alkaline aluminophosphate glasses and the radiation-induced luminescence characteristics. Optical absorption and X-ray absorption near edge structure spectra of Cu-doped glasses showed that the glass fused in Ar atmosphere contains higher concentration of Cu(+) than those prepared in air. In addition, the presence of Cu(+) enhances the photoluminescence (PL) quantum yield and PL kinetic constant. Furthermore, the increase of Cu(+) concentration resulted an improvement of the X-ray-induced scintillation and thermally-stimulated luminescence intensity.
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spelling pubmed-77228582020-12-09 Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics Shiratori, Daiki Masai, Hirokazu Kato, Takumi Okada, Go Nakauchi, Daisuke Kawaguchi, Noriaki Yanagida, Takayuki Sci Rep Article A glass phosphor is an attractive material for applications in radiation detections because of its high workability and availability with a wide range of chemical compositions. Recently, X-ray-induced luminescence of glasses containing various luminescent activators are actively investigated worldwide. In applications as phosphor, tailoring valence state of activators, which can take multiple valence states in glass, is very important. In this research, we studied effects of glass melting atmosphere on the valence state of copper-activator ion in alkaline aluminophosphate glasses and the radiation-induced luminescence characteristics. Optical absorption and X-ray absorption near edge structure spectra of Cu-doped glasses showed that the glass fused in Ar atmosphere contains higher concentration of Cu(+) than those prepared in air. In addition, the presence of Cu(+) enhances the photoluminescence (PL) quantum yield and PL kinetic constant. Furthermore, the increase of Cu(+) concentration resulted an improvement of the X-ray-induced scintillation and thermally-stimulated luminescence intensity. Nature Publishing Group UK 2020-12-08 /pmc/articles/PMC7722858/ /pubmed/33293606 http://dx.doi.org/10.1038/s41598-020-78510-z Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Shiratori, Daiki
Masai, Hirokazu
Kato, Takumi
Okada, Go
Nakauchi, Daisuke
Kawaguchi, Noriaki
Yanagida, Takayuki
Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
title Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
title_full Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
title_fullStr Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
title_full_unstemmed Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
title_short Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
title_sort oxidation suppression of cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7722858/
https://www.ncbi.nlm.nih.gov/pubmed/33293606
http://dx.doi.org/10.1038/s41598-020-78510-z
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