Quantum dots, and an electronic device including the same
US11512254B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Nov 29, 2022 |
| Priority date | — |
| Expiry date | May 27, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB82Y40/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A quantum dot including a core including a first semiconductor nanocrystal including a Group III-V compound, and a shell disposed on the core and including a semiconductor nanocrystal including a Group II-VI compound, wherein the quantum dots do not include cadmium, the shell includes a first layer disposed directly on the core and including a second semiconductor nanocrystal including zinc and selenium, a second layer, the second layer being an outermost layer of the shell and including a third semiconductor nanocrystal including zinc and sulfur, and a third layer disposed between the first layer and the second layer and including a fourth semiconductor nanocrystal including zinc, selenium, and optionally sulfur, and a difference between a peak emission wavelength of a colloidal solution of the quantum dot and a peak emission wavelength of a film prepared from the colloidal solution is less than or equal to about 5 nanometers (nm).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.