Details

Autor(en) / Beteiligte

• Osipov, V.V.
• Ishchenko, A.V.
• Shitov, V.A.
• Maksimov, R.N.
• Lukyashin, K.E.
• Platonov, V.V.
• Orlov, A.N.
• Osipov, S.N.
• Yagodin, V.V.
• Viktorov, L.V.
• Shulgin, B.V.

Titel

Fabrication, optical and scintillation properties of transparent YAG:Ce ceramics

Ist Teil von

• Optical materials, 2017-09, Vol.71, p.98-102

Ort / Verlag

Elsevier B.V

Erscheinungsjahr

2017

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• 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. •Highly transparent YAG-Ce ceramics were synthesized.•The decay constant of 5%Ce-YAG ceramic is 26 ns.•The absolute light yield of 1%Ce-YAG ceramic is 20 ph/MeV.