Characterization of Cvd Diamond Films by Optical Spectroscopies
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ABSTRACTRaman and photoluminescence spectroscopy was used to investigate radiation damage by 5 MeV He+ ions at room temperature in prototype CVD-diamond detector material. Amorphization of the diamond is not observed at fluences up to 8×1015 cm-2. A threshold behavior is seen in the formation of the H3 vacancy-dinitrogen color center. The defect is not observed for fluences in the range 1.6×1012 to 1.6×1013 cm-2; a linear behavior increase in H3 intensity is observed over the range 1.6×1014 to 1.6×1015 cm-2. The formation mechanism of the H3 color center under He+ irradiation involves a self-annealing effect that allows vacancies to diffuse to, and complex with, nitrogen complexes.
2017 ◽
Vol 12
(03)
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pp. C03052-C03052
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2016 ◽
Vol 55
(4)
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pp. 046401
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1994 ◽
1995 ◽
Vol 4
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pp. 517-519
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2013 ◽
Vol 210
(10)
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pp. 2083-2087
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