Discrimination between natural and HPHT-treated type IIa diamonds using photoluminescence spectroscopy

Lim, Hyunjin; Park, Sooyoun; Cheong, Hyeonsik; Choi, Hyun-Min; Kim, Young Chool

doi:10.1016/j.diamond.2010.06.007

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Discrimination between natural and HPHT-treated type IIa diamonds using photoluminescence spectroscopy

Lim, Hyunjin;
Park, Sooyoun;
Cheong, Hyeonsik;
Choi, Hyun-Min;
Kim, Young Chool

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16

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18

초록

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.

키워드

Diamond crystal; High pressure high temperature (HPHT); Optical emission; Optical properties characterization; Impurities; Optical properties; HIGH-PRESSURE; LUMINESCENCE; ABSORPTION; DEFECTS

제목: Discrimination between natural and HPHT-treated type IIa diamonds using photoluminescence spectroscopy

저자: Lim, Hyunjin; Park, Sooyoun; Cheong, Hyeonsik; Choi, Hyun-Min; Kim, Young Chool

DOI: 10.1016/j.diamond.2010.06.007

발행일: 2010-10

유형: Article

저널명: Diamond and Related Materials

권: 19

호: 10

페이지: 1254 ~ 1258