Rare-earth fluorescent material prepared in vertical electric furnace and preparing method thereof

Abstract

The RE fluorescent material in vertical electric furnace is prepared with Al2O3, Al(OH)3, Tl2O3 and Y2O3 as main material, and CeO2, B2O3 and Nb2O5 as micro additives in certain weight proportion, and through mixing, ball milling for 5-20 hr, setting the milled mixture inside one special cylindrical baking pot with one small backing pot holding carbon powder inside it, heat treatment at 1300-1600 deg.c inside vertical electric furnace for 2-8 hr, cooling, sorting and sieving to obtain the RE fluorescent material. The said preparation process can produce white RE fluorescent material capable of matching LED in industrial scale and in low cost.

Description

technical field [0001] The invention relates to a rare earth fluorescent material and a preparation method thereof, in particular to a rare earth fluorescent material prepared by a vertical electric furnace and a preparation method thereof. Background technique [0002] Since ancient times, human beings have loved light and feared darkness. Edison's invention of the light bulb has brought light to human beings, enabling people to work, study and live at night as in daytime. The advent of fluorescent lamps has greatly improved the lighting industry. Great development, the invention of rare earth energy-saving lamps, is known as a new milestone for human civil lighting sources. Among many practical luminescent materials that humans have developed, rare earth elements play a great role, and the role of rare earth elements far exceeds that of other elements. . In fact, the phenomenon of material luminescence can be roughly divided into two categories: one is that the material i...

AI Technical Summary

Problems solved by technology

However, the existing rare-earth fluorescent materials that can be combined with light-emitting diodes to form white light have high production costs and certain limitations in technology.