Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5442552 | Optical Materials | 2017 | 5 Pages |
Abstract
Highly transparent YAG:Ce ceramics (transmission of 72-82% for 2-mm-thick samples in 550-900 nm wavelength range) were fabricated by solid-state reactive sintering using a mixture of Ce2xY2-2xO3 (x = 0.001, 0.01, 0.03, and 0.05) and Al2O3 nanopowders synthesized by laser ablation with an additional round of pre-calcining before compaction. The synthesized YAG:Ce ceramic materials showed intense luminescence with a maximum at 525-545 nm. The measured absolute light yields of the synthesized YAG:Ce ceramics were 18-21 photon/MeV for 1-5 at.% Ce and 5 photon/MeV for 0.1 at.% Ce. The energy resolutions of the fabricated thin ceramic samples (2 mm) under 662 keV gamma ray were measured to be 10-15%. The decay curves of scintillations consisted of two components with the decay times depending on the Ce3+ concentration. The sample doped with 5 at.% of Ce exhibited the main fast component with 26 ns decay time. The measured data was compared to that of YAG:Ce and well-known CsI:Tl single crystal scintillators. The influence of dopant concentration on the optical, luminescence and scintillation properties was discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
V.V. Osipov, A.V. Ishchenko, V.A. Shitov, R.N. Maksimov, K.E. Lukyashin, V.V. Platonov, A.N. Orlov, S.N. Osipov, V.V. Yagodin, L.V. Viktorov, B.V. Shulgin,