Photoluminescent nanofiber composites, methods for fabrication, and related lighting devices

摘要

A photoluminescent nanofiber composite includes a nanofiber substrate, first luminescent particles, and second luminescent particles. The first luminescent particles are supported by the nanofibers and span at least a portion of a substrate surface, as a layer on the substrate surface, or with some particles located in a bulk of the substrate, or both. The second luminescent particles are disposed on the substrate. The second luminescent particles may be disposed directly on the substrate surface or on the first luminescent particles. The second luminescent particles may be deposited in a pattern of deposition units. The first and second luminescent particles are configured for emitting light of different respective wavelengths in response to excitation by a light beam. One or more surface treatment coatings may be provided at different locations.

主权项

1. A photoluminescent nanofiber composite, comprising:
a substrate comprising a plurality of nanofibers and a substrate surface; a plurality of first luminescent particles supported by the nanofibers and spanning at least a portion of the substrate surface, the first luminescent particles configured for emitting secondary light of a first wavelength in response to excitation by a light beam of a different wavelength; and one or more sections of second luminescent particles disposed on the substrate, the one or more sections comprising a pattern of deposition units spaced from each other, each deposition unit comprising a plurality of the second luminescent particles, the second luminescent particles configured for emitting secondary light at a second wavelength different from the primary wavelength and from the first wavelength, in response to excitation by the light beam.