Fabrication of fluorescent dyes supported on porous boron nitride nanosheets and their excellent photoluminescence properties

Abstract

Fluorescent dyes rhodamine B (RhB) was successfully introduced into the porous boron nitride nanosheets to obtain an effective and rare-earth free light composite conversion materials. X-ray powder diffractions, photoluminescence spectra, etc., were used to investigate the optical performance and thermal stability of these organic-dye-impregnated phosphor composites. The experimental results evidently showed that, compared with the optical properties of RhB in aqueous solution, the composite phosphors possessed more excellent optical performance and higher thermal stability due to their structural defects, surface hydroxyl groups and nanosize pore channel. In addition, the phosphor composites exhibited greatly improved service life and had a broad visible emission wavelengths of 540–680 nm under the 363 nm light excitation. We believe that the reported work should open the way toward the practical application of organic-dye-impregnated phosphor composites in the field of illumination light source.