METHOD FOR PREPARING A ZINC/MANGANESE SILICATE TYPE TRANSPARENT GREEN PHOSPHOR FILM WITH EXCELLENT TRANSMISSIVITY IN A VISIBLE WAVELENGTH REGION

摘要

PURPOSE: Green phosphor particles and a transparent green phosphor film are provided to ensure excellent light-emitting property and dispersion characteristics, excellent transmissivity in a visible wavelength region, and to diversify emitted light colors from red to blue.;CONSTITUTION: A method for preparing a zinc/manganese silicate type transparent green phosphor film comprises the steps of: (i) mixing a mixed aqueous solution, gelation agent, polyethyleneglycol, and spherical silica to prepare a gel including spherical zinc/manganese silicate of a core-shell structure with an average particle diameter of 50~200 nm, wherein zinc ions and manganese ions form a film(shell) on the surface of spherical silica(core) in the gel; and (ii) heat-drying the gel, and pulverizing and sintering the dried material.;COPYRIGHT KIPO 2011