Phosphor, method for preparing phosphor, optoelectronic component, and method for producing optoelectronic component
US10683454B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2018 |
| Grant date | Jun 16, 2020 |
| Priority date | — |
| Expiry date | Oct 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/8511
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a phosphor, a method for preparing the phosphor, an optoelectronic component, and a method for producing the optoelectronic component. The phosphor has the following general formula: La3(1−x)Ga1−yGe5(1−z)O16: 3xA3+, yCr3+, 5zB4+, where x, y, and z do not equal to 0 simultaneously; A represents at least one of Gd and Yb; B represents at least one of Sn, Nb, and Ta. For the phosphor, its emission spectrum is within a red visible light region and a near-infrared region when excited by blue visible light, purple visible light or ultraviolet light; and it has a wide reflection spectrum and a high radiant flux. Therefore, it can be used in optoelectronic components such as LEDs to meet requirements of current medical testing, food composition analysis, security cameras, iris/facial recognition, virtual reality, gaming notebook and light detection and ranging applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.