Silver nanowires as plasmonic compensators of luminescence quenching in single up-converting nanocrystals deposited on graphene.

ABSTRACT: Single nanocrystal spectroscopy is employed to demonstrate metal-enhanced optical response of Er³⁺/Yb³⁺ doped up-conversion nanocrystals deposited on graphene upon coupling with silver nanowires. Direct interaction between nanocrystals and graphene results in quenching of up-conversion emission and shortening of luminescence decay times, due to the energy transfer to graphene. The amount of the energy absorbed by graphene can be enhanced by coupling Er³⁺/Yb³⁺ doped up-conversion nanocrystals with silver nanowires. Microscopy studies with high spatial resolution together with time-resolved analysis of nanocrystal luminescence show increase of the emission rates with fourfold enhancement of the intensity for nanocrystals placed in the vicinity of s

SUBMITTER: Prymaczek A 

PROVIDER: S-EPMC7878765 | biostudies-literature | 2021 Feb

REPOSITORIES: biostudies-literature