Promising single crystal host for bulk scintillators: luminescence and energy migration in (Gd,Y)AlO3

IF 5.2 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Advances Pub Date : 2024-11-12 DOI:10.1039/D4MA00932K

Monika Kotyková, Romana Kučerková, Alena Beitlerová, Vladimir Babin, Vítězslav Jarý, Jan Touš, Jan Polák, Karel Blažek and Martin Nikl

{"title":"Promising single crystal host for bulk scintillators: luminescence and energy migration in (Gd,Y)AlO3","authors":"Monika Kotyková, Romana Kučerková, Alena Beitlerová, Vladimir Babin, Vítězslav Jarý, Jan Touš, Jan Polák, Karel Blažek and Martin Nikl","doi":"10.1039/D4MA00932K","DOIUrl":null,"url":null,"abstract":"The optical and photoluminescent characteristics of the heavy perovskite (Gd0.40,Y0.60)AlO3 single crystal were evaluated. Typical Gd3+ transitions were observed in the absorption spectrum. The photoluminescent kinetics and temperature dependence of the Gd3+ emission line at 312 nm were examined in order to study the energy migration within the Gd3+ sublattice. In comparison to multicomponent (Gd,Y)3(Ga,Al)5O12 garnet, the migration in (Gd0.40,Y0.60)AlO3 was demonstrated to be more rapid and more efficient at lower temperatures. The radioluminescent spectrum demonstrated the existence of accidental impurities, namely Ce3+, Fe3+ and Cr3+, within the primary material, which were subsequently verified through the observation of their distinctive kinetic properties. In excitation spectra within the VUV-UV range at room temperature the band-to-band transition is situated at about 180 nm, in which also an efficient excitation of Ce3+ emission occurs. Such a host paves the way to economic industrial production of heavy aluminum perovskite-based single crystal scintillators.","PeriodicalId":18242,"journal":{"name":"Materials Advances","volume":" 24","pages":" 9774-9780"},"PeriodicalIF":5.2000,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/ma/d4ma00932k?page=search","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Materials Advances","FirstCategoryId":"1085","ListUrlMain":"https://pubs.rsc.org/en/content/articlelanding/2024/ma/d4ma00932k","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

The optical and photoluminescent characteristics of the heavy perovskite (Gd_0.40,Y_0.60)AlO₃ single crystal were evaluated. Typical Gd³⁺ transitions were observed in the absorption spectrum. The photoluminescent kinetics and temperature dependence of the Gd³⁺ emission line at 312 nm were examined in order to study the energy migration within the Gd³⁺ sublattice. In comparison to multicomponent (Gd,Y)₃(Ga,Al)₅O₁₂ garnet, the migration in (Gd_0.40,Y_0.60)AlO₃ was demonstrated to be more rapid and more efficient at lower temperatures. The radioluminescent spectrum demonstrated the existence of accidental impurities, namely Ce³⁺, Fe³⁺ and Cr³⁺, within the primary material, which were subsequently verified through the observation of their distinctive kinetic properties. In excitation spectra within the VUV-UV range at room temperature the band-to-band transition is situated at about 180 nm, in which also an efficient excitation of Ce³⁺ emission occurs. Such a host paves the way to economic industrial production of heavy aluminum perovskite-based single crystal scintillators.