Posphor-glass by the pressureless sintering for 3D printing technology

At present, the vast majority of LED products are packaged using a mixture of silicone/epoxy resin and phosphor, and there are problems such as silicone/epoxy resin aging, brightness drop, color drift, and shortened life in practical applications. Fluorescent glass/ceramic has high temperature corrosion resistance, rare earth ions are evenly distributed in glass ceramics, with better color stability and color uniformity; Rare earth-doped glass block material is easy to fix, which is conducive to deviceization. In this paper, amorphous silica nanoparticles are used to reduce the interface reaction between phosphors and silicon glass, silicate glass with high silicon content is the best matrix material for its high chemical and thermal stability, and the use of amorphous silicon nanoparticles to promote the densification process and the development of luminescent light curing composite slurry to promote its densification process. The pressureless sintering method mixes phosphors and amorphous silica nanoparticles, so that the mixture containing phosphor can be directly used for 3D printing technology, and special-shaped luminescents can be obtained through three-dimensional printing technology programming and its performance is guaranteed. The fluorescent paste 3D printing technology can be manufactured directly with complex shapes of color converters for rapid manufacturing.