Quantum dot, manufacturing method of the dot, and compact, sheet member, wavelength conversion member and light emitting apparatus using the quantum dot
US10266769B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2015 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Apr 27, 2035 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/95
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
To provide a quantum dot and manufacturing method of the dot particularly capable of reducing organic residues adhering to the quantum dot surface and of suppressing the black discoloration occurrence of a layer including the quantum dot positioned immediately above a light emitting device, and a compact, sheet member, wavelength conversion member and light emitting apparatus with high luminous efficiency using the quantum dot, a quantum dot of the present invention has a core portion including a semiconductor particle, and a shell portion with which the surface of the core portion is coated, and is characterized in that a weight reduction up to 490° C. is within 75% in a TG-DTA profile. Further, the quantum dot of the invention is characterized in that oleylamine (OLA) is not observed in GC-MS qualitative analysis at 350° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.