Number of the records: 1
Optical, luminescence and scintillation characteristics of Gd.sub.3./sub.Sc.sub.2./sub.(Al.sub.3-x./sub.Ga.sub.x./sub.)O.sub.12./sub.: Ce,Mg (x = 0, 1, 2) single crystalline films
- 1.0564852 - FZÚ 2023 RIV NL eng J - Journal Article
Wantong, K. - Chewpraditkul, Wa. - Chewpraditkul, W. - Rathaiah, M. - Kučera, M. - Danis, S. - Beitlerová, Alena - Kučerková, Romana - Nikl, Martin
Optical, luminescence and scintillation characteristics of Gd3Sc2(Al3-xGax)O12: Ce,Mg (x = 0, 1, 2) single crystalline films.
Optical Materials. Roč. 134, Dec. (2022), č. článku 113240. ISSN 0925-3467. E-ISSN 1873-1252
R&D Projects: GA MŠMT(CZ) EF16_019/0000760; GA ČR(CZ) GA21-17731S
Grant - others:OP VVV - SOLID21(XE) CZ.02.1.01/0.0/0.0/16_019/0000760
Institutional support: RVO:68378271
Keywords : Gd3Sc2(Al,Ga)5O12:Ce * liquid phase epitaxy * scintillator * single crystalline films
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 3.9, year: 2022
Method of publishing: Limited access
https://doi.org/10.1016/j.optmat.2022.113240
Optical, luminescence and scintillation characteristics of Ce3+ - doped Gd3Sc2(Al3-xGax)O12 (x = 0, 1, 2) single crystalline films fabricated by the liquid phase epitaxy (LPE) technique are investigated. A blue shift of the photoand radio-luminescence spectra is observed as Ga content increased due to a decrease in crystal field splitting of the Ce3+ 5d levels. Temperature-dependent characteristics of radioluminescence (RL) intensity and photoluminescence (PL) decay time are investigated. At room temperature, the decrease of PL- & RL- intensity and PL decay time with increasing Ga content can be explained by thermal ionization of the Ce3+ 5d1 excited state. Gd3Sc2Al2GaO12:Ce exhibits the highest light yield (LYα) value of 1010 ph/MeV along with fast scintillation decay time of 12 ns (27%) + 52 ns (73%) under excitation with 5.5 MeV α – particles. Shortening of scintillation decay time with a decrease of the LY value is also obtained in Mg2+-codoped samples.
Permanent Link: https://hdl.handle.net/11104/0336426
Number of the records: 1