Chin. Phys. Lett.  2006, Vol. 23 Issue (9): 2570-2572    DOI:
Original Articles |
Influence of Self-Absorption and Impurities on Scintillation Properties of (Lu0.1Y0.9)AlO3:Ce Single Crystals
DING Dong-Zhou;LU Sheng;QIN Lai-Shun;REN Guo-Hao
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800
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DING Dong-Zhou, LU Sheng, QIN Lai-Shun et al  2006 Chin. Phys. Lett. 23 2570-2572
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Abstract Lu0.1Y0.9AlO3:Ce single crystals in dimensions ∅30×90mm3 are successfully grown by the Czochralski method. The light output and energy resolution of the crystal in dimensions ∅14×2mm3 are 9420 photons/MeV and 12.5% respectively. Dependence of the light output on the thickness of the sample is found and explained by the self-absorption in the range of 320--370nm and the underlying parasitic absorption around 250nm. In addition, the local enrichment of Ce ions and the presence of low-valent impurity ions may cause the deterioration of its light output. In addition, Lu0.1Y0.9AlO3:Ce has an almost constant fluorescence decay time of 16ns in the temperature range of 80--373K.

Keywords: 78.55.Hx      78.40.Ha      78.60.Hk     
Published: 01 September 2006
PACS:  78.55.Hx (Other solid inorganic materials)  
  78.40.Ha (Other nonmetallic inorganics)  
  78.60.Hk (Cathodoluminescence, ionoluminescence)  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2006/V23/I9/02570
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DING Dong-Zhou
LU Sheng
QIN Lai-Shun
REN Guo-Hao
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