Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/83017
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Type: Journal article
Title: Photochromic charge transfer processes in natural pink and brown diamonds
Author: Byrne, K.
Chapman, J.
Luiten, A.
Citation: Journal of Physics: Condensed Matter, 2014; 26(3):035501-1-035501-6
Publisher: IOP Publishing
Issue Date: 2014
ISSN: 0953-8984
1361-648X
Organisation: Institute for Photonics & Advanced Sensing (IPAS)
Statement of
Responsibility: 
K S Byrne, J G Chapman and A N Luiten
Abstract: Natural pink and brown diamonds exhibit surprising photochromic phenomena when optically pumped with ultraviolet light of photon energy epsilon ≥ 4.1 eV, including a subsequent sensitivity to infrared pumps, which is not evident prior to UV exposure. In this study, we observe the dependence of photochromism on pump photon energy and intensity, for both UV and IR pumps. From these observations, we propose a model of several distinct charge transfer processes between multiple species of optically active defect centres. We show it is likely that the UV-induced behaviour of pink diamond photochromism is linked to the vacancy clusters responsible for brown colouration in diamonds.
Keywords: Colour centre; electronic transitions; photochromism; natural diamond
Description: Extent: 6 p. Erratum (Corrigendum) published for this article in: Journal of Physics: Condensed Matter, 2014; 26(23):239502
Rights: © 2014 IOP Publishing
RMID: 0030000049
DOI: 10.1088/0953-8984/26/3/035501
Grant ID: http://purl.org/au-research/grants/arc/FT0991631
Appears in Collections:IPAS publications

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