Fluorescence and spin properties of defects in single digit nanodiamonds

Abstract : This article reports stable photoluminescence and high-contrast optically detected electron spin resonance (ODESR) from single nitrogen-vacancy (NV) defect centers created within ultrasmall, disperse nanodiamonds of radius less than 4 nm. Unexpectedly, the efficiency for the production of NV fluorescent defects by electron irradiation is found to be independent of the size of the nanocrystals. Fluorescence lifetime imaging shows lifetimes with a mean value of around 17 ns, only slightly longer than the bulk value of the defects. After proper surface cleaning, the dephasing times of the electron spin resonance in the nanocrystals approach values of some microseconds, which is typical for the type Ib diamond from which the nanoparticle is made. We conclude that despite the tiny size of these nanodiamonds the photoactive nitrogen-vacancy color centers retain their bulk properties to the benefit of numerous exciting potential applications in photonics, biomedical labeling, and imaging.
Type de document :
Article dans une revue
Liste complète des métadonnées

Littérature citée [21 références]  Voir  Masquer  Télécharger

https://hal-mines-paristech.archives-ouvertes.fr/hal-00481219
Contributeur : Bibliothèque Umr7633 <>
Soumis le : mardi 10 juillet 2018 - 09:57:28
Dernière modification le : jeudi 2 mai 2019 - 14:22:03
Document(s) archivé(s) le : mardi 2 octobre 2018 - 08:56:26

Fichier

Tissler-Balasubramanian-Sennou...
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Citation

Julia Tisler, Gopalakrischnan Balasubramanian, Boris Naydenov, Roman Kolesov, Bernhard Grotz, et al.. Fluorescence and spin properties of defects in single digit nanodiamonds. ACS Nano, American Chemical Society, 2009, 3 (7), pp.1959-1965. ⟨10.1021/nn9003617⟩. ⟨hal-00481219⟩

Partager

Métriques

Consultations de la notice

333

Téléchargements de fichiers

137