Non-blinking quantum dot, preparation method thereof, and quantum dot-based light-emitting diode
US11387423B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 25, 2020 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Dec 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10K2102/351
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A non-blinking quantum dot (NBQD) is provided. In a light-emitting diode (LED) prepared with the NBQD, the maximum red brightness is greater than 180,000 cd/m2, the green brightness is greater than 200,000 cd/m2, and the blue brightness is greater than 100,000,000 cd/m2. The red current efficiency is 15-40 cd/A, the green current efficiency is 90-150 cd/A, and the blue current efficiency is 1-20 cd/A. The red external quantum efficiency is 18-30%, the green external quantum efficiency is 18-30%, and the blue external quantum efficiency is 6-22%. When the current efficiency or external quantum efficiency is the highest, the red, green and blue brightness of the LED is 70,000-100,000 cd/m2, 70,000-200,000 cd/m2 and 3,000-40,000 cd/m2, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.