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Anomalous green luminescent properties in CVD synthetic diamonds

Wassell, Amber M., McGuinness, Colin D., Hodges, Chris, Lanigan, Peter M. P., Fisher, David, Martineau, Philip M., Newton, Mark E. and Lynch, Stephen A. 2018. Anomalous green luminescent properties in CVD synthetic diamonds. physica status solidi (a) 215 (22) , 1800292. 10.1002/pssa.201800292

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Abstract

In this paper, the authors explore the spectral properties of a sharp emission line centered at 499.6 nm (reported previously as 499 nm) observed in the UV‐luminescence spectrum of synthetic CVD diamond gemstones. These gemstones also exhibit spectrally prompt broad blue luminescence centered at 435 nm which is similar in character to the 425 nm blue luminescence characteristic of type IIa natural diamonds. By comparing the results against synthetic CVD diamond material which has been subjected to high temperature anneals, the authors can speculate on the nature of the defect associated with this color center. Since the 499 nm spectral line has only been observed in synthetic CVD diamonds to date, the authors further propose that it can be helpful in the identification of synthetic diamonds, in particular those showing the blue luminescence signature usually associated with type IIa natural diamonds.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Publisher: Wiley
ISSN: 1862-6300
Date of First Compliant Deposit: 16 October 2018
Date of Acceptance: 29 August 2018
Last Modified: 03 Apr 2019 14:43
URI: http://orca.cf.ac.uk/id/eprint/115915

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