Luminous nano-glass-ceramics used as white LED source and preparing method of luminous nano-glass-ceramics
US9260340B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2010 |
| Grant date | Feb 16, 2016 |
| Priority date | — |
| Expiry date | Jun 5, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC04B2235/764
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A luminous nano-glass-ceramics used as white LED source and the preparing method of nano-glass-ceramics are provided. The glass is a kind of non-porous compact SiO2 glass in which luminous nano-microcrystalites are dispersed. The luminous nano-microcrystalite has the chemical formula of YxGd3-xAl5O12:Ce, wherein 0≦x≦3. The stability of the said glass is good and its irradiance is uniform. The preparing method comprises the following steps: dissolving the compound raw materials in the solvent to form mixed solution, dipping the nano-microporous SiO2 glass in the solution, taking it out and air drying, sintering at the temperature of 1100-1300° C. for 1-5 hours by stage heating, and obtaining the product. The method has a simple process, convenient operation and low cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.