Temperature-dependent photoluminescence kinetics, photo- and radio-luminescence, and scintillation properties of Y1.75Gd1.25Al2.8Ga2.2O12:Ce,Mo (Mo = 0, 40, 100, 200 ppm) single-crystalline films

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Author list: Chewpraditkul W.; Wantong K.; Chewpraditkul W.; Kucerkova R.; Beitlerova A.; Strachotova D.; Nikl M.; Kucera M.

Publisher: Elsevier

Publication year: 2025

Journal: Optical Materials (0925-3467)

Volume number: 165

ISSN: 0925-3467

eISSN: 1873-1252

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-105004705771&doi=10.1016%2fj.optmat.2025.117086&partnerID=40&md5=9c6775e5eda8d3736162f89a63fb9358

Languages: English-Great Britain (EN-GB)

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Abstract

Photo- and radio-luminescence and scintillation properties of Y1.75Gd1.25Al2.8Ga2.2O12:Ce,Mo (Mo = 0, 40, 100, 200 ppm) single-crystalline films grown by the isothermal liquid phase epitaxy technique and microcrystalline powders (Mo = 0 and 600 ppm) were investigated. The onset temperature at 375 K for luminescence quenching was determined from the temperature-dependent photoluminescence kinetics. Under excitation with 5.5 MeV α particles, the Y1.75Gd1.25Al3Ga2O12:Ce,Mo40 exhibited the highest light yield of 8900 photons/MeV and energy resolution of 4.8 % along with scintillation decay times of 115 ns (20.3 %) + 967 ns (29.9 %) + 2825 (49.8 %). © 2025

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