Population of quantum dots and a composition including ihe same
US11193062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2020 |
| Grant date | Dec 7, 2021 |
| Priority date | — |
| Expiry date | Mar 20, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02F2202/36
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Disclosed are a quantum dot population including a plurality of cadmium free quantum dots, a quantum dot polymer composite including the same, and a display device including the same. The plurality of cadmium free quantum dots includes: a semiconductor nanocrystal core comprising indium and phosphorous, a first semiconductor nanocrystal shell disposed on the semiconductor nanocrystal core and comprising zinc and selenium, and a second semiconductor nanocrystal shell disposed on the first semiconductor nanocrystal shell and comprising zinc and sulfur, wherein an average particle size of the plurality of cadmium free quantum dots is greater than or equal to about 5.5 nm, a standard deviation of particle sizes of the plurality of cadmium free quantum dots is less than or equal to about 20% of the average particle size, and an average solidity of the plurality of cadmium free quantum dots is greater than or equal to about 0.85.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.