Phosphor, method for manufacturing same, and light-emitting device
US10836961B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 4, 2017 |
| Grant date | Nov 17, 2020 |
| Priority date | — |
| Expiry date | Jun 12, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8515
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A phosphor-containing member includes a transparent member, and a plurality of granular single crystal phosphors dispersed in the transparent member. Each of the plurality of granular single crystal phosphors includes a YAG crystal as a mother crystal. The plurality of granular single crystal phosphors are prepared by crushing the YAG crystal. The YAG crystal has a composition represented by a formula of Y3-x-yGdxCeyAl5O12-w (0.03≤x≤0.2, 0.003≤y≤0.2, −0.2≤w≤0.2). Reduction of fluorescence intensity of the phosphors is less than 3% when an excitation light wavelength is 460 nm and a temperature is increased from 25° C. to 100° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.