Photostimulated luminescence in Eu-doped fluorochlorozirconate glass ceramics

Applied Physics Letters - Tập 83 Số 3 - Trang 449-451 - 2003
Stefan Schweizer1, Linn W. Hobbs1, M. Secu2, J.‐M. Spaeth2, A. Edgar3, G. V. M. Williams3
1Department of Materials Science and Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139-4307
2Faculty of Sciences, Department of Physics, University of Paderborn, D-33095 Paderborn, Germany
3MacDiarmid Institute, Victoria University, Wellington, New Zealand

Tóm tắt

We report the synthesis of Eu2+- and chlorine-doped fluorozirconate glass-ceramics that show an intense photostimulated luminescence (PSL) after x-ray irradiation at room temperature. The PSL efficiency is up to 80% of that found in the well-known crystalline x-ray storage phosphor BaFBr:Eu2+, and it is the largest thus far reported for a glass-ceramic. We attribute the PSL to crystallites of orthorhombic BaCl2 that are formed after annealing above the glass temperature. Hexagonal BaCl2 crystallites are also observed after short annealing times, but they do not provide a measurable PSL signal. The photoluminescence peak from glass-ceramics containing orthorhombic BaCl2 crystallites occurs at 402 nm, and the stimulation band is centered at about 560 nm.

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Tài liệu tham khảo

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Thông tin
Thông tin xuất bản

Applied Physics Letters

Tập 83 Số 3

449-451

Thông tin tác giả