Chin. Phys. Lett.  2005, Vol. 22 Issue (1): 175-177    DOI:
Original Articles |
Optical Properties of CuCl+-Implantation and Observation of Sub-micrometre Particles in α-Al2O3 Crystals
WANG Chun-Fen;LEI Jia-Rong;WANG De-Zhi;HUANG Ning-Kang
Key Laboratory for Radiation Physics and Technology of the Education Ministry of China, Institute of Nuclear Science and Technology, Sichuan University, Chengdu 610064
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WANG Chun-Fen, LEI Jia-Rong, WANG De-Zhi et al  2005 Chin. Phys. Lett. 22 175-177
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Abstract Crystal samples of α-Al2O3 were implanted in different crystalline orientations with CuCl+ at intensities from 6×1016 ions/cm2 to 5×1017 ions/cm2 and energies from 350 to 380keV at different temperatures. A strong absorption of UV section can be seen in optical absorption spectra for all of the specimens. Gaussian fitting for the absorption curves with luminescence measurements confirmed that there were point defects such as F, F+, F2+, and F2 centres in the CuCl+-implanted α-Al2O3 samples. It is found that the absorption intensity is decreased by annealing treatment, thus the number of the colour centres was decreased due to annealing. It is also found that the variety of colour centre number was dependent greatly on implantation conditions, substrate orientation and annealing temperature. Sub-micrometre particles after annealing have been observed by using the SEM technique.
Keywords: 61.72.Ww      61.72.Ji 61.46.+w     
Published: 01 January 2005
PACS:  61.72.Ww  
  61.72.Ji 61.46.+w  
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https://cpl.iphy.ac.cn/       OR      https://cpl.iphy.ac.cn/Y2005/V22/I1/0175
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WANG Chun-Fen
LEI Jia-Rong
WANG De-Zhi
HUANG Ning-Kang
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