Grains size and shape dependence of luminescence efficiency of Lu2O3:Eu thin screens

I.E. Seferis; J. Zeler; C. Michail; S. David; I. Valais; G. Fountos; N. Kalyvas; A. Bakas; I. Kandarakis; E. Zych; G.S. Panayiotakis

Results in Physics (Jan 2017)

Grains size and shape dependence of luminescence efficiency of Lu2O3:Eu thin screens

I.E. Seferis,
J. Zeler,
C. Michail,
S. David,
I. Valais,
G. Fountos,
N. Kalyvas,
A. Bakas,
I. Kandarakis,
E. Zych,
G.S. Panayiotakis

Affiliations

I.E. Seferis: Department of Medical Physics, Medical School, University of Patras, 26500 Patras, Greece; Faculty of Chemistry, University of Wroclaw, 14. F. Joliot-Curie Street, 50-383 Wroclaw, Poland; Corresponding author at: Faculty of Chemistry, University of Wroclaw, 14. F. Joliot-Curie Street, 50-383 Wroclaw, Poland.
J. Zeler: Faculty of Chemistry, University of Wroclaw, 14. F. Joliot-Curie Street, 50-383 Wroclaw, Poland
C. Michail: Radiation Physics, Materials Technology and Biomedical Imaging Laboratory, Department of Biomedical Engineering, Technological Educational Institute of Athens, Egaleo, 12210 Athens, Greece
S. David: Radiation Physics, Materials Technology and Biomedical Imaging Laboratory, Department of Biomedical Engineering, Technological Educational Institute of Athens, Egaleo, 12210 Athens, Greece
I. Valais: Radiation Physics, Materials Technology and Biomedical Imaging Laboratory, Department of Biomedical Engineering, Technological Educational Institute of Athens, Egaleo, 12210 Athens, Greece
G. Fountos: Radiation Physics, Materials Technology and Biomedical Imaging Laboratory, Department of Biomedical Engineering, Technological Educational Institute of Athens, Egaleo, 12210 Athens, Greece
N. Kalyvas: Radiation Physics, Materials Technology and Biomedical Imaging Laboratory, Department of Biomedical Engineering, Technological Educational Institute of Athens, Egaleo, 12210 Athens, Greece
A. Bakas: Department of Medical Radiological Technology, Technological Educational Institute of Athens, 12210 Athens, Greece
I. Kandarakis: Radiation Physics, Materials Technology and Biomedical Imaging Laboratory, Department of Biomedical Engineering, Technological Educational Institute of Athens, Egaleo, 12210 Athens, Greece
E. Zych: Faculty of Chemistry, University of Wroclaw, 14. F. Joliot-Curie Street, 50-383 Wroclaw, Poland
G.S. Panayiotakis: Department of Medical Physics, Medical School, University of Patras, 26500 Patras, Greece

Journal volume & issue: Vol. 7
pp. 980 – 981

Abstract

Read online

The aim of this work is to provide a comparative evaluation of luminescence efficiency of Lu2O3:Eu phosphors screens, in transmission mode, prepared with different grain shape and size, and manufactured by the sedimentation method. More specific, three screens were prepared with spherical grains of size 50 nm, 200 nm and 5 μm. Furthermore, two screens with rod-like shape grains and size of 500 nm and 1–8 μm. The behavior of Absolute Luminescence Efficiency (AE) at low energy X-rays (50 kVp) appeared to differ with the grains size and shape. Furthermore the rod-like grain screens appeared with reduced luminescence efficiency values.

Published in Results in Physics

ISSN: 2211-3797 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Science: Physics
Website: http://www.journals.elsevier.com/results-in-physics/

About the journal