Photoluminescence Study of He ions hot-implanted Sapphire After 208Pb27+ of 230MeV Irradiation |
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Authors: | SONG Yin ZHANG Cong-Hong WANG Zhi-Guang ZHAO Zhi-Ming DUAN Jin-Lai YAO Cun-Feng |
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Institution: | Institute of Modern Physics,CAS,Lanzhou 730000,China |
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Abstract: | In the present work the photoluminescence (PL)character of sapphire implanted with He ions and subsequently irradiated with 208Pb27+ of 1.1MeV/u was studied. Sapphire single crystals were implanted with 110keV He ions at 600K temperature to fluences ranging from (0.5 to 2)×1017 ions/cm2, some of them were subsequently irradiated with 208 Pb27+.From experimental results we found PL spectra peaks at 375nm, 413nm, and 450nm, and it's intensity gets maximum at fluence of 5×1016 He ions/cm2. Also we found a new peak at 390nm after subsequent 208 Pb27+ irradiation, which is possibly due to the crystallized sediment containing nano crystal Al2O3 appeared on the sample surface. |
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