Semiconductor nanocrystals and compositions and devices including same
US8980133B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 21, 2009 |
| Grant date | Mar 17, 2015 |
| Priority date | — |
| Expiry date | Feb 28, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10H20/823
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A semiconductor nanocrystal capable of emitting light with an improved photoluminescence quantum efficiency. The present invention further relates to compositions and devices including semiconductor nanocrystals capable of emitting light with an improved photoluminescence quantum efficiency. A semiconductor nanocrystal wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 50% upon excitation and including a maximum peak emission with a FWHM less than 20 nm is disclosed. Also disclosed are a device, a population of semiconductor nanocrystals, and a composition including a semiconductor nanocrystal wherein the semiconductor nanocrystal is capable of emitting light with a photoluminescence quantum efficiency greater than about 50% upon excitation and including a maximum peak emission with a FWHM less than 20 nm. A semiconductor nanocrystal that is capable of emitting light upon excitation with a photoluminescence quantum efficiency greater than about 90%. Also disclosed are a device, a population, and a composition including a semiconductor nanocrystal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.