Journal
DIAMOND AND RELATED MATERIALS
Volume 19, Issue 10, Pages 1254-1258Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.diamond.2010.06.007
Keywords
Diamond crystal; High pressure high temperature (HPHT); Optical emission; Optical properties characterization; Impurities; Optical properties
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Funding
- Ministry of Education, Science and Technology (Quantum Photonic Science Research Center)
- National Research Foundation of Korea [과09A1113, 2008-0057473] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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We have performed low-temperature (8 K) photoluminescence (PL) measurements on 71 natural and 12 high-pressure-and-high-temperature (HPHT)-treated type IIa diamonds. The GR1, NV0, NV-, H4, and H3 defect center PL signals are compared. Some distinct differences in the PL lineshape, intensity, and appearance of side-band PL signals are observed. Furthermore, we processed 6 of the natural diamond samples with the HPHT treatment to investigate the effect of the treatment on the PL spectrum. By systematically analyzing the differences in the PL spectra, we developed a scheme to discriminate natural and HPHT-treated diamonds with 99% validity. (c) 2010 Elsevier B.V. All rights reserved.
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