Photoinduced white light glass and preparing process thereof

Abstract

The invention discloses photoinduced white light glass and a preparing process thereof. Matrix glass is prepared from, by atomic percent, 5-30% of Sb2O3, 5-15% of Na2O5, 1-15% of Al2O3, 5-25% of ZnO and 25-70% of P2O5, doped rare earth ions Sm3+ account for 0.1-2% of the mass of the matrix glass, and the balance is BaO. According to the white light glass, antimony is added to phosphate glass to form the antimony phosphate matrix glass, preparation cost is reduced remarkably with phosphate glass as the matrix, Sb2O3 exists in the glass system in the form of a network former as part of the network structure of the glass and the component of the matrix glass, and then forming is facilitated; due to mutual transformation between Sb3+ and Sb5+ during glass smelting, a stable Sb3+ luminescence center can be formed in the glass, and a luminous source is more stable.

Description

technical field [0001] The invention relates to a glass and a preparation process thereof, in particular to a photowhite glass and a preparation process thereof. Background technique [0002] In recent years, white light-emitting diodes (w-LEDs), known as fourth-generation white light sources, have attracted more and more attention due to their advantages such as long life, low energy consumption, no pollution, fast response, and small size. As a new type of solid-state light source, w-LED mainly has the following realization methods: 1) combination of red, blue and green three-primary-color LED chips; 2) violet LED + three-primary-color phosphor; 3) blue LED + yellow phosphor. It can be seen that fluorescent materials are the main components for preparing w-LEDs, and the properties of fluorescent materials and packaging methods directly affect important optical parameters such as luminous efficacy, color coordinates, color temperature, and color rendering of white LEDs. At...

AI Technical Summary

Problems solved by technology

However, due to the difference in refractive index and resin, there is light scattering on the surface of the phosphor powder, which reduces the light extraction efficiency, and as the power increases, the temperature of the blue light chip increases, resulting in accelerated aging of the packaging material and deterioration of the performance of the phosphor powder, which seriously damages the white light. Luminous efficiency, service life and stability of LED

The problem that phosphors cannot meet the lighting requirements of high-power white LEDs has become increasingly prominent. Therefore, it is necessary to develop a new high-performance phosphor with high quantum efficiency, good thermal stability, and no resin packaging to replace phosphors in white LEDs.

Images