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Nano Lett. 2007 Nov;7(11):3433-7. Epub 2007 Sep 29.

Single nitrogen vacancy centers in chemical vapor deposited diamond nanocrystals.

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  • 1Department of Physics, Division of Information and Communication Science, Macquarie University, New South Wales 2109, Australia. jrabeau@ics.mq.edu.au

Abstract

Nanodiamond crystals containing single color centers have been grown by chemical vapor deposition (CVD). The fluorescence from individual crystallites was directly correlated with crystallite size using a combined atomic force and scanning confocal fluorescence microscope. Under the conditions employed, the optimal size for single optically active nitrogen-vacancy (NV) center incorporation was measured to be 60-70 nm. The findings highlight a strong dependence of NV incorporation on crystal size, particularly with crystals less than 50 nm in size.

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