Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
8149069 | Journal of Crystal Growth | 2018 | 9 Pages |
Abstract
Luminescence and scintillation properties of Bi3+, Sb3+, and Eu2+-doped LaI3 and LaBr3 were explored. Out of the three dopants investigated, Eu2+ was the most promising new activator for small-bandgap LaX3 (Xâ¯=â¯Br, I) and was further studied in the mixed-halide LaBr3âxIx. Crystals were grown from the melt using the vertical Bridgman method. LaBr3:Eu2+ 0.5% (mol) had the most favorable scintillation properties with a light output of 43,000 ph/MeV and 6% energy resolution at 662â¯keV. Performance of LaBr3âxIx:Eu2+ worsened for most samples as iodide concentration was increased. Room-temperature scintillation of LaI3:Eu2+ 0.1% and 0.5% was observed and is the first case of room-temperature emission reported for doped LaI3.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
Daniel Rutstrom, Robyn Collette, Luis Stand, Matthew Loyd, Yuntao Wu, Merry Koschan, Charles L. Melcher, Mariya Zhuravleva,