Photostimulable luminescence and imaging in vapor-deposited BaFCl:Eu thin film phosphors
作者:
P. F. Carcia,
R. S. McLean,
M. K. Crawford,
B. D. Jones,
期刊:
Applied Physics Letters
(AIP Available online 1998)
卷期:
Volume 72,
issue 12
页码: 1415-1417
ISSN:0003-6951
年代: 1998
DOI:10.1063/1.120581
出版商: AIP
数据来源: AIP
摘要:
Thin films of BaFCl:Eu with photostimulable luminescence (PSL) were grown by vapor deposition. For substrate temperatures at or below 350 °C, films were optically transparent and exhibited higher resolution in x-ray imaging than a commercial, particulate PSL phosphor screen, when luminescence was stimulated by scanning with a focused HeNe laser. Although post annealing films in a hydrogen atmosphere at 600–900 °C increased their PSL signal, which was relatively weak in as-deposited films, annealing reduced imaging resolution, apparently because of an increase in optical scattering of the focused laser. The implications of hydrogen annealing for the PSL mechanism are also discussed. ©1998 American Institute of Physics.
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