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US 9,543,481 B2Granted
Semiconductor nanoparticle-based materials
AssigneeNanoco Technologies Ltd.
InventorsNigel Pickett, Imad Naasani, James Harris
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Abstract
The present invention relates to a primary particle comprised of a primary matrix material containing a population of semiconductor nanoparticles, wherein each primary particle further comprises an additive to enhance the physical, chemical and/or photo-stability of the semiconductor nanoparticles. A method of preparing such particles is described. Composite materials and light emitting devices incorporating such primary particles are also described.
Claims16
A method of making a quantum dot (QD)-containing bead-in-bead composition, the method comprising:
- encapsulating a plurality of QDs within a first bead material to provide a plurality of primary beads, each primary bead containing a plurality of QDs encapsulated therein;
- encapsulating a plurality of the primary beads within a second bead material to provide a plurality of secondary beads, each secondary bead containing a plurality of primary beads encapsulated therein;
- incorporating a stability-enhancing additive into either the primary bead or into the secondary bead;
- and,
- coating the primary beads with an inorganic protective surface.
2 more elements
A bead-in-bead composition comprising:
- a plurality of primary beads encapsulated within a secondary bead, wherein each primary bead comprises a first bead material and a plurality of quantum dots (QDs) encapsulated within the primary bead, the secondary bead comprises a secondary bead material, the primary beads or the secondary bead comprise a stability-enhancing additive, and the primary beads comprise an inorganic protective surface.
Dependencies are inferred from the claim text.