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Cathodoluminescence Performance of LuAG:Pr Single-Crystalline Films Optimized by Sc,Ga-codoping
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SYSNO ASEP 0518915 Document Type A - Abstract R&D Document Type The record was not marked in the RIV R&D Document Type Není vybrán druh dokumentu Title Cathodoluminescence Performance of LuAG:Pr Single-Crystalline Films Optimized by Sc,Ga-codoping Author(s) Lalinský, Ondřej (UPT-D) RID, ORCID, SAI
Schauer, Petr (UPT-D) RID, SAI, ORCID
Hanuš, M. (CZ)
Kučera, M. (CZ)Number of authors 4 Source Title SCINT 2019. 15th International Conference on Scintillating Materials and their Applications. Proceedings. - Sendai : Tohoku University, 2019
S. 135Number of pages 1 s. Publication form Print - P Action SCINT 2019. International Conference on Scintillating Materials and their Applications /15./ Event date 29.09.2019 - 04.10.2019 VEvent location Sendai Country JP - Japan Event type WRD Language eng - English Country JP - Japan Keywords cathodoluminescence ; multicomponent garnet ; liquid phase epitaxy ; single-crystalline film Subject RIV JA - Electronics ; Optoelectronics, Electrical Engineering OECD category Condensed matter physics (including formerly solid state physics, supercond.) R&D Projects TN01000008 GA TA ČR - Technology Agency of the Czech Republic (TA ČR) ED0017/01/01 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) Institutional support UPT-D - RVO:68081731 Annotation Pr3+-activated lutetium aluminum garnet (LuAG:Pr) scintillator exhibits a broad emission band in the UV range between 300 and 400 nm and short decay time of ~20 ns, but also noticeable slow components
caused probably by the antisite defects. It was shown previously, that Ga substitution suppressed these components, but also lowered scintillators’ light yield. Also previously, the light yield was improved by 60-80% due to Sc-codoping in LuAG:Pr,Sc single crystalline films. In this study, LuA(G)G:Pr,Sc single crystalline films were grown by the liquid-phase epitaxy with various substituent concentrations. These specimens were studied by the spectrally-, time- and temperature-resolved cathodoluminescence (CL). Due to slight (1.1) Ga substitution, the integrated CL intensity doubled and decay remained similar in comparison to Ga-free film. Higher Ga concentration lowers the afterglow, shortens the decay, somehow reduces CL
intensity, which is, however, still slightly higher than that of Ga-free film.Workplace Institute of Scientific Instruments Contact Martina Šillerová, sillerova@ISIBrno.Cz, Tel.: 541 514 178 Year of Publishing 2020
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