Open AccessLuminescence of Ce3+ at two different sites in α-Sr2P2O7 under vacuum ultraviolet-UV and x-ray excitation
Author(s) -
Dejian Hou,
Bing Han,
Wanping Chen,
H. Liang,
Qiang Su,
P. Dorenbos,
Yan Huang,
Zhenhua Gao,
Ye Tao
Publication year - 2010
Publication title -
journal of applied physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.699
H-Index - 319
eISSN - 1089-7550
pISSN - 0021-8979
DOI - 10.1063/1.3500333
Subject(s) - luminescence , phosphor , excitation , ultraviolet , doping , analytical chemistry (journal) , vacuum ultraviolet , materials science , wavelength , excitation wavelength , chemistry , atomic physics , optoelectronics , physics , chromatography , quantum mechanics
A series of Ce3+ doped ?-Sr2?2xCexNaxP2O7 phosphor compounds has been prepared using a high-temperature solid-state reaction technique. The luminescence properties under vacuum ultraviolet-UV and x-ray excitation were studied. Luminescence spectra reveal three UV-emitting peaks at about 310, 330, and 350 nm from which we conclude that Ce3+ occupies two distinct sites in ?-Sr2P2O7. The influences of the doping concentration, the temperature, and the excitation wavelength on the luminescence of Ce3+ at the Ce(I) and Ce(II) sites together with the decay characteristics are discussed. The light yield under x-ray excitation is found to be around 10?000 photons/MeV.RRR/Radiation, Radionuclides and ReactorsApplied Science
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