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Effect of Annealing Treatments on Optical and Luminescence Properties of Lu1.8Y0.2SiO5:Ce Single Crystal

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Abstract:

LYSO:Ce crystal is one of efficient scintillation materials with high light output and short decay time. LYSO:Ce crystal grown by Czochralski method can be affected by annealing treatments. In present work, annealing treatments in different atmosphere (air, N2 and H2) were carried out on the LYSO:Ce crystals to investigate the effect on the optical and luminescence properties after annealing. The optical transmittance, excitation and emission spectrum, and the decay time have been attained at room temperature. Luminescence efficiency has been presented by the integrated area of emission spectra under ultraviolet (UV) excitation. It is found that annealing treatments almost do not affect the optical transmittance. Annealing in N2 atmosphere has no noteworthy effect on the luminescence intensity of LYSO:Ce crystals, but increases much annealing in H2 atmosphere, dramatically decreases the luminescence intensity after annealing in air. In addition, the decay time of LYSO:Ce crystals are affected by annealing treatment either in air or in H2 atmosphere.

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Periodical:

Key Engineering Materials (Volume 655)

Pages:

198-202

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.655.198

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Online since:

July 2015

Authors:

Ling Cong Fan, Yuan Zhang, Xiao Xiao Ji, Ying Shi*, Jian Jun Xie, Fang Lei

Keywords:

Annealing Treatment, Decay Time, Emission Spectra, LYSO:Ce Crystal, Transmittance

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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