Red light and near-infrared light-emitting material, preparation method thereof and light-emitting device
US11932790B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2019 |
| Grant date | Mar 19, 2024 |
| Priority date | — |
| Expiry date | Jun 20, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/0361
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are a red light and near-infrared light-emitting material and a preparation method thereof, and a light-emitting device including the light-emitting material. The red light and near-infrared light-emitting material contains a compound represented by a molecular formula, aSc2O3·Ga2O3·bR2O3, wherein the element R includes one or two of Cr, Ni, Fe, Yb, Nd or Er; 0.001≤a≤0.6; and 0.001≤b≤0.1. The light-emitting material can be excited by a spectrum having a wide wavelength range (ultraviolet light or purple light or blue light) to emit light with a wide spectrum of 650 nm to 1700 nm or multiple spectra, thus having higher light-emitting intensity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.