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Crystal growth and characterization of Eu2+ doped Cs1-xRbxCaBr3
Natl Acad Sci Ukraine, Inst Scintillat Mat, Nauky Ave 60, UA-61072 Kharkov, Ukraine.
Natl Acad Sci Ukraine, Inst Scintillat Mat, Nauky Ave 60, UA-61072 Kharkov, Ukraine.
Natl Acad Sci Ukraine, Inst Scintillat Mat, Nauky Ave 60, UA-61072 Kharkov, Ukraine.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Chemistry - Ångström, Inorganic Chemistry.
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2020 (English)In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 816, article id 152594Article in journal (Refereed) Published
Abstract [en]

A series of Eu2+ doped Cs1-xRbxCaBr3 solid solutions were grown using the Bridgman-Stockbarger technique. Their photoluminescence and scintillation properties are studied. Upon optical and X-ray excitation, the Cs1-xRbxCaBr3 and Eu2+ activated samples show a band, which can be attributed to the 5d-4f transition in Eu2+. The decay time constants become shorter with increasing Rb content and lie in the range of 3-4 mu s. The scintillation performance of solid solutions Cs1-xRbxCa0. 95Eu0.05Br3 is improved compared with the end members (CsCa0.95Eu0.05Br3 and RbCa0.95Eu0.05Br3). The best energy resolution of 6.4% at 662 keV was determined for Cs0.2Rb0.8Ca0.95Eu0.05Br3 , and the best light yield, equal to 61.2% of Nal:TI, was demonstrated by Cs0.4Rb0.6Ca0.95Eu0.05Br3.

Place, publisher, year, edition, pages
2020. Vol. 816, article id 152594
Keywords [en]
Inorganic materials, Crystal growth, Optical properties, X-ray and gamma-ray spectroscopies, X-ray diffraction
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-402621DOI: 10.1016/j.jallcom.2019.152594ISI: 000503725300024OAI: oai:DiVA.org:uu-402621DiVA, id: diva2:1386495
Available from: 2020-01-17 Created: 2020-01-17 Last updated: 2020-01-17Bibliographically approved

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Berastegui, Pedro

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