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Issue 27, 2017
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Magnetic field-induced enhancement of the nitrogen-vacancy fluorescence quantum yield

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Abstract

The nitrogen-vacancy (NV) centre in diamond is a unique optical defect that is used in many applications today and methods to enhance its fluorescence brightness are highly sought after. We observed experimentally an enhancement of the NV quantum yield by up to 7% in bulk diamond caused by an external magnetic field relative to the field-free case. This observation is rationalised phenomenologically in terms of a magnetic field dependence of the NV excited state triplet-to-singlet transition rate. The theoretical model is in good qualitative agreement with the experimental results at low excitation intensities. Our results significantly contribute to our fundamental understanding of the photophysical properties of the NV defect in diamond.

Graphical abstract: Magnetic field-induced enhancement of the nitrogen-vacancy fluorescence quantum yield

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Supplementary files

Article information


Submitted
24 Mar 2017
Accepted
22 Jun 2017
First published
03 Jul 2017

Nanoscale, 2017,9, 9299-9304
Article type
Communication

Magnetic field-induced enhancement of the nitrogen-vacancy fluorescence quantum yield

M. Capelli, P. Reineck, D. W. M. Lau, A. Orth, J. Jeske, M. W. Doherty, T. Ohshima, A. D. Greentree and B. C. Gibson, Nanoscale, 2017, 9, 9299
DOI: 10.1039/C7NR02093G

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