Uniform transfer of luminescent quantum dots onto a substrate
US8193010B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2010 |
| Grant date | Jun 5, 2012 |
| Priority date | — |
| Expiry date | Oct 23, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/887
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
A method of uniformly transferring luminescent quantum dots onto a substrate, comprising: a) preparing a colloidal suspension of luminescent quantum dots in a hydrophobic solvent, wherein the density of the hydrophobic solvent is from 0.67 g/cm3 to 0.96 g/cm3; b) dispensing the suspension onto a convex aqueous surface; c) allowing the hydrophobic solvent to evaporate; d) contacting the film of luminescent quantum dots with a hydrophobic stamp; and e) depositing the film of luminescent quantum dots onto a substrate with the hydrophobic stamp is described herein. Further described is a method of preparing quantum dot based light emitting diodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.