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Comparison of the photoluminescence properties of single NV color centers in diamond nanocrystals with single fluorescent organic molecules and optimization of the photoluminescence yield of nanodiamonds

Orestis Faklaris, Jacques Botsoa, Thierry Sauvage, Jean-François Roch and François Treussart, actes de la conférence Diamond 2009, Diam. Relat. Mater. 19, 988-995 (2010)

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Nitrogen-Vacancy (NV) color centers in diamond nanoparticles (NanoDiamonds, NDs) have a great number of applications, in particular in quantum information processing and as cellular fluorescent labels. In this work we compare the photoluminescence properties of a single NV color center embedded in a 30 nm diameter nanodiamond to that of a single organic fluorescent molecule. We then compare the photoluminescence properties of NDs prepared under different conditions in order to find the optimal parameters to achieve a high fluorescence yield. The results of this study are of interest for the applications of small and bright diamond nanoparticles in nanophotonics and biology.

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