DocumentCode :
757282
Title :
Shallow Traps in 
Single Crystal Perovskites
Author :
Fasoli, Mauro ; Fontana, Ilaria ; Moretti, Federico ; Vedda, Anna ; Nikl, Martin ; Mihokova, Eva ; Zorenko, Yuriy V. ; Gorbenko, Vitalyi I.
Author_Institution :
Dept. of Mater. Sci., Univ. of Milano-Bicocca, Milan
Volume :
55
Issue :
3
fYear :
2008
fDate :
6/1/2008 12:00:00 AM
Firstpage :
1114
Lastpage :
1117
Abstract :
The aim of this work is to investigate the influence of shallow traps on scintillating properties of YAlO3:Ce. Wavelength-resolved thermally stimulated luminescence measurements following X-ray irradiation at 10 K have been performed on both undoped and Ce-doped crystals. Different and composite glow curves and emission spectra were obtained. Following glow peaks analysis of YAlO3:Ce, their room temperature decay time was evaluated to be of the order of 10-4 s. The presence of an athermal tunneling recombination process between traps and Ce3+ ions below 100 K has been evidenced by phosphorescence decays.
Keywords :
cerium; electron traps; minerals; phosphorescence; radiation effects; solid scintillation detectors; thermoluminescence; tunnelling; vacancies (crystal); yttrium compounds; X-ray irradiation effects; YAP; YAlO3:Ce; athermal tunneling recombination process; charge carriers; composite glow curves; electron trap; emission spectra; oxygen vacancy; phosphorescence decays; scintillator timing characteristics; shallow defect traps; single crystal perovskites; temperature 10 K; wavelength-resolved thermally stimulated luminescence; Chromium; Crystals; Luminescence; Materials science and technology; Performance evaluation; Physics; Raw materials; Temperature; Tunneling; Wavelength measurement; Perovskites; YAP; scintillators; thermally stimulated luminescence;
fLanguage :
English
Journal_Title :
Nuclear Science, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9499
Type :
jour
DOI :
10.1109/TNS.2008.922818
Filename :
4545113
Link To Document :
