Abstract
We investigated basic optical and scintillation properties of pure Y 2O3, Tm3+-doped Y2O3, pure Lu2O3 and Nd3+-doped Lu2O 3 transparent ceramics made by a sintering method. All ceramic samples showed 60-80% transparency, and some absorption bands due to Nd 3+ 4f-4f transition were observed in Nd3+:Lu 2O3 ceramic. Both Tm3+:Y2O 3 and Nd3+:Lu2O3 ceramics showed sharp luminescence lines corresponding to the 4f-4f transition under 285 nm (Tm3+:Y2O3) and 340 nm (Nd3+:Lu 2O3) excitation. The photoluminescence decay times were calculated to be about 24 μs for Tm3+:Y2O3 and 1 μs for Nd3+:Lu2O3, respectively. In radioluminescence measurements, Tm3+ and Nd3+ 4f-4f luminescence were observed for Tm3+-doped Y2O3 and Nd3+-doped Lu2O3 ceramics under 241Am 5.5 MeV α-ray excitation. Finally scintillation light yield was investigated with pulse height analysis.
Original language | English |
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Pages (from-to) | 448-451 |
Number of pages | 4 |
Journal | Optical Materials |
Volume | 34 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2011 Dec |
Keywords
- 4f-4f transition
- Scintillators
- Sesquioxide
- Transparent ceramic
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Computer Science(all)
- Atomic and Molecular Physics, and Optics
- Spectroscopy
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry
- Electrical and Electronic Engineering