Flexible nanophosphor films doped with Mie resonators for enhanced out-coupling of the emission.

ABSTRACT: Herein, we present a general method to prepare self-standing flexible photoluminescent coatings of controlled opacity for integration into light-emitting diodes (LEDs) employing cost-effective solution-processing methods. From colloidal suspensions of nano-sized phosphors, we fabricate light-emitting transparent films that can be doped with spherical scatterers, which act as Mie resonators that trigger a controlled photoluminescence enhancement, evidenced by the reduction of the guided light along the layer. This results in an enhanced emission compared to that extracted from a bare phosphor layer. We show not only that emission is visible under ultraviolet-LED illumination for both rigid and flexible versions of the coatings, but we also prove the feasibility of the integration of these f

SUBMITTER: Miranda-Munoz JM 

PROVIDER: S-EPMC6394886 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature