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

Abstract 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 investigate...

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Autores principales:	Daiki Shiratori, Hirokazu Masai, Takumi Kato, Go Okada, Daisuke Nakauchi, Noriaki Kawaguchi, Takayuki Yanagida
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/bd04eac51101412a82924a0b9a40743a
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spelling	oai:doaj.org-article:bd04eac51101412a82924a0b9a40743a2021-12-02T16:18:05ZOxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics10.1038/s41598-020-78510-z2045-2322https://doaj.org/article/bd04eac51101412a82924a0b9a40743a2020-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-78510-zhttps://doaj.org/toc/2045-2322Abstract 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.Daiki ShiratoriHirokazu MasaiTakumi KatoGo OkadaDaisuke NakauchiNoriaki KawaguchiTakayuki YanagidaNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Daiki Shiratori Hirokazu Masai Takumi Kato Go Okada Daisuke Nakauchi Noriaki Kawaguchi Takayuki Yanagida Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
description	Abstract 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.
format	article
author	Daiki Shiratori Hirokazu Masai Takumi Kato Go Okada Daisuke Nakauchi Noriaki Kawaguchi Takayuki Yanagida
author_facet	Daiki Shiratori Hirokazu Masai Takumi Kato Go Okada Daisuke Nakauchi Noriaki Kawaguchi Takayuki Yanagida
author_sort	Daiki Shiratori
title	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_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_sort	oxidation suppression of cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/bd04eac51101412a82924a0b9a40743a
work_keys_str_mv	AT daikishiratori oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics AT hirokazumasai oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics AT takumikato oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics AT gookada oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics AT daisukenakauchi oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics AT noriakikawaguchi oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics AT takayukiyanagida oxidationsuppressionofcuinalkalinealuminophosphateglassandtheeffectsforradiationinducedluminescencecharacteristics
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Oxidation suppression of Cu in alkaline aluminophosphate glass and the effects for radiation-induced luminescence characteristics

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