Premium
Red shift of the PSL spectra by Al 3+ doping in BaFBr:Eu 2+
Author(s) -
Xiong Guangnan,
Gao Suhua,
Yu Hua,
Xu Li,
Lou Suyun
Publication year - 2000
Publication title -
journal of the society for information display
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.578
H-Index - 52
eISSN - 1938-3657
pISSN - 1071-0922
DOI - 10.1889/1.1828694
Subject(s) - psl , doping , photostimulated luminescence , europium , phosphor , center (category theory) , luminescence , analytical chemistry (journal) , materials science , spectral line , photoluminescence , wavelength , optics , atomic physics , physics , chemistry , crystallography , optoelectronics , geometry , mathematics , chromatography , astronomy
— Photostimulated luminescent (PSL) materials are currently used for digital storage and display in radiography. The phosphor BaFBr:Eu 2+ doped with Al 3+ is shown to have a very high PSL intensity, and the peak of the PSL spectrum shifts to a longer wavelength. Compared with BaFBr:Eu 2+ doped with Ca 2+ , Sr 2+ , or Mg 2+ , BaAlFBr:Eu 2+ is better suited to the stimulated light wavelength emitted by a semiconductor laser. The red‐shift mechanism is considered to be a F A center for BaFBr:Eu 2+ doped with Ca 2+ , Sr 2+ , or Mg 2+ and a F Z1 center for BaFBr:Eu 2+ doped with Al 3+ .