NV-centers in Nanodiamonds: How good they are

Abstract

This paper presents a method for determination of the size distribution for diamond nanocrystals containing luminescent nitrogen-vacancy (NV) centers using the luminescence intensity only. We also revise the basic photo physical properties of NV centers and conclude that the luminescence quantum yield of such centers is significantly smaller than the frequently stated 100\%. The yield can be as low as 5\% for centers embedded in nanocrystals and depends on their shape and the refractive index of the surrounding medium. The paper also addresses the value of the absorption cross-section of NV centers.

References in corpus (3)

• Three megahertz photon collection rate from an NV center with millisecond spin coherence
• Efficient Photon Coupling from a Diamond Nitrogen Vacancy Centre by Integration with Silica Fibre
• Enhanced spontaneous emission from nanodiamond colour centres on opal photonic crystal

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• A scalable method for cavity-enhanced solid-state quantum sensors