Comparison of the luminescence properties of the x-ray storage phosphors BaCl2:Ce3+ and BaBr2:Ce3+
- 1. Department of Physics, University of Paderborn, Warburger Str. 100, D-33098 Paderborn (Germany)
- 2. Research Institute for Solid State Physics and Optics, Hungarian Academy of Sciences, Budapest, H-1525 (Hungary)
- 3. National Institute of Materials Physics, Bucharest-Magurele (Romania)
Description
The single-crystalline x-ray storage phosphor BaCl2:Ce3+ has been investigated by photo- and x-ray luminescence, and also by observing the afterglow and the photostimulated luminescence (PSL). A single active Ce3+ site has been observed with a characteristic emission doublet at 349 and 373 nm at room temperature. The PSL stimulation spectrum shows a clear resemblance to F-type absorption spectra in undoped BaCl2, indicating that the PSL-active electron centres are F-type centres. The results are compared with previous photoluminescence, PSL and new x-ray luminescence data on BaBr2:Ce3+. The integral PSL efficiency in the chloride is found to be somewhat smaller than in the bromide, which is still large enough for storage phosphor applications, while the efficiency in the bromide may be even larger or comparable to that of the commercial x-ray storage phosphor BaFBr:Eu2+
Availability note (English)
Available online at http://stacks.iop.org/0953-8984/17/8069/cm5_50_024.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/Additional details
Identifiers
- URL
- http://stacks.iop.org/0953-8984/17/8069/cm5_50_024.pdf;
- DOI
- 10.1088/0953-8984/17/50/024;
- PII
- S0953-8984(05)05293-8;
Publishing Information
- Journal Title
- Journal of Physics. Condensed Matter
- Journal Volume
- 17
- Journal Issue
- 50
- Journal Page Range
- p. 8069-8078
- ISSN
- 0953-8984
- CODEN
- JCOMEL
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 37059238
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Descriptors DEI
- ABSORPTION SPECTRA; AFTERGLOW; BARIUM BROMIDES; BARIUM CHLORIDES; CERIUM IONS; COMPARATIVE EVALUATIONS; EFFICIENCY; ELECTRONS; EUROPIUM IONS; MONOCRYSTALS; PHOSPHORS; PHOTOLUMINESCENCE; STIMULATION; TEMPERATURE DEPENDENCE; X RADIATION
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; BARIUM COMPOUNDS; BROMIDES; BROMINE COMPOUNDS; CHARGED PARTICLES; CHLORIDES; CHLORINE COMPOUNDS; CRYSTALS; ELECTROMAGNETIC RADIATION; ELEMENTARY PARTICLES; EMISSION; EVALUATION; FERMIONS; HALIDES; HALOGEN COMPOUNDS; IONIZING RADIATIONS; IONS; LEPTONS; LUMINESCENCE; PHOTON EMISSION; RADIATIONS; SPECTRA