Narrowband fluorescent nanodiamonds produced from chemical vapor deposition films

TL;DR

This paper presents a method to produce high-quality, narrowband fluorescent nanodiamonds from CVD films, which can serve as single photon sources or fluorescence labels due to their stable luminescence properties.

Contribution

The study introduces a new process for creating nanodiamonds with intense narrowband luminescence from CVD films, highlighting their potential in quantum and bio-imaging applications.

Findings

Nanodiamonds are 70-80 nm in size with high crystalline quality.

They exhibit intense narrowband luminescence at 738 nm due to SiV centers.

Potential use as single photon sources or fluorescence labels.

Abstract

We report on the production of nanodiamonds (NDs) with 70-80 nm size via bead assisted sonic disintegration (BASD) of a polycrystalline chemical vapor deposition (CVD) film. The NDs display high crystalline quality as well as intense narrowband (7 nm) room temperature luminescence at 738 nm due to in situ incorporated silicon vacancy (SiV) centers. The fluorescence properties at room and cryogenic temperatures indicate that the NDs are, depending on preparation, applicable as single photon sources or as fluorescence labels.