Light emitting device, an optical spectrometer, and a down-converting film for a light emitting device
US10937930B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Aug 29, 2019 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Aug 29, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01J2003/2806
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Provided is a light emitting device that includes a substrate; a first electrode formed by a first electrically conductive layer arranged over the substrate; an active light emitting layer arranged over said first electrically conductive layer, and that includes a host matrix and light emitting quantum dots embedded there within; and a second electrode formed by a second electrically conductive layer arranged over the active light emitting layer. The host matrix has charge carrier supplier quantum dots blended with the light emitting quantum dots, forming a binary blend where the charge carrier supplier quantum dots are made and arranged to supply charge carriers to the light emitting quantum dots, and wherein the light emitting quantum dots are made and arranged to accept the supplied charge carriers. Also provided is a spectrometer having the LED and a down-converting film for a LED.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.