Luminescence of Ce3+ at two different sites in ?-Sr2P2O7 under vacuum ultraviolet-UV and x-ray excitation

Journal article (2010)

Authors

D. Hou

B. Han

W. Chen

H. Liang

Q. Su

P. Dorenbos

Y. Huang

Z. Gao

Y. Tao

Department

RRR/Radiation, Radionuclides and Reactors () (TU Delft)

DOI: https://doi.org/doi:10.1063/1.3500333

Cerium Luminescence Strontium compounds Doping profiles Sodium compounds Phosphors Cerium compounds Ultraviolet radiation effects X-ray effects

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http://resolver.tudelft.nl/uuid:858534fe-7e68-49a3-8d67-a47a955ec82d

Published Date

26-10-2010

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Source:

Journal of Applied Physics, 108 (8), 2010

ISSN:

0021-8979

Source:

http://jap.aip.org/resource/1/japiau/v108/i8/p083527_s1

Faculty

Applied Sciences

Department

RRR/Radiation, Radionuclides and Reactors

Abstract

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.

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