Improved emission of SiV diamond color centers embedded into concave plasmonic core-shell nanoresonators.

ABSTRACT: Configuration of three different concave silver core-shell nanoresonators was numerically optimized to enhance the excitation and emission of embedded silicon vacancy (SiV) diamond color centers simultaneously. Conditional optimization was performed to ensure ~20-30-40 and 50% apparent quantum efficiency (cQE) of SiV color centers. The enhancement spectra, as well as the near-field and charge distribution were inspected to uncover the underlying nanophotonical phenomena. The conditionally optimized coupled systems were qualified by the product of the radiative rate enhancements at the excitation and emission, which is nominated as P _x factor. The optimized spherical core-shell nanoresonator containing a centralized emitter is capable of enhancing the emission considerably via bo

SUBMITTER: Szenes A 

PROVIDER: S-EPMC5653742 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature