Compositions and methods including depositing nanomaterial

Patent metadata

Field	Value
Publication number	US-9815996-B2
Application number	US-201414531114-A
Country	US
Kind code	B2
Filing date	Nov 3, 2014
Priority date	Jun 25, 2007
Publication date	Nov 14, 2017
Grant date	Nov 14, 2017

Abstract

An ink composition comprising a nanomaterial and a liquid vehicle, wherein the liquid vehicle includes a composition including one or more functional groups that are capable of being cross-linked is disclosed. An ink composition comprising a nanomaterial, a liquid vehicle, and scatterers is also disclosed. An ink composition including a nanomaterial and a liquid vehicle, wherein the liquid vehicle includes a perfluorocompound is further disclosed. A method for inkjet printing an ink including nanomaterial and a liquid vehicle with a surface tension that is not greater than about 25 dyne/cm is disclosed. In certain preferred embodiments, the nanomaterial includes semiconductor nanocrystals. Devices prepared from inks and methods of the invention are also described.

First claim

What is claimed is:

1. An ink composition comprising:
a light emissive nanomaterial comprising a plurality of quantum confined semiconductor nanocrystals capable of emitting light,
a plurality of scattering particles, and
a non-polar organic solvent liquid vehicle.

2. An ink composition in accordance with claim 1 wherein the scattering particles comprise metal or metal oxide particles, air bubbles, solid glass beads, or hollow glass beads.

3. An ink composition in accordance with claim 1 wherein the scattering particles comprise TiO 2 , SiO 2 , BaTiO 3 , and ZnO.

4. An ink composition in accordance with claim 1 wherein at least a portion of the scattering particles have a spherical shape.

5. An ink composition in accordance with claim 1 wherein the scattering particles have a spherical shape.

6. An ink composition in accordance with claim 1 wherein at least a portion of the scattering particles include a surface-treatment to improve dispersability and stability in the liquid medium.

7. An ink composition in accordance with claim 1 wherein the scattering particles comprise particles of TiO 2 with an average particle size of 0.2 μm.

8. An ink composition in accordance with claim 1 wherein the concentration of scattering particles is in a range from 0.001% and 20% by weight.

9. An ink composition in accordance with claim 1 wherein the concentration of scattering particles is in a range from 0.1% and 10% by weight.

10. An ink composition in accordance with claim 1 wherein the concentration of scattering particles is in a range from 0.1% and 3% by weight.

11. An ink composition in accordance with claim 1 wherein the ink composition includes at least about 0.1 mg of quantum confined semiconductor nanocrystals per ml of liquid vehicle.

12. An ink composition in accordance with claim 1 wherein the ink composition includes at least about 1 mg of quantum confined semiconductor nanocrystals per ml of liquid vehicle.

13. An ink composition in accordance with claim 1 wherein the ink composition includes at least about 5 mg of quantum confined semiconductor nanocrystals per ml of liquid vehicle.

14. An ink composition in accordance with claim 1 wherein the ink composition includes at least about 10 mg of quantum confined semiconductor nanocrystals per ml of liquid vehicle.

15. An ink composition in accordance with claim 1 wherein the ink composition includes at least about 25 mg of quantum confined semiconductor nanocrystals per ml of liquid vehicle.

16. An ink composition in accordance with claim 1 wherein the ink composition includes at least about 50 mg of quantum confined semiconductor nanocrystals per ml of liquid vehicle.

17. An ink composition in accordance with claim 1 wherein at least a portion of the quantum confined semiconductor nanocrystals comprise a core/shell structure.

18. An ink composition in accordance with claim 1 wherein the ink composition comprises a dispersion.

19. An ink composition in accordance with claim 1 wherein the ink composition comprises a colloidal dispersion.

20. A device comprising an ink composition in accordance with claim 1 .

Assignees

• Samsung Electronics Co Ltd
• Samsung Electronics Co Ltd

Inventors

• Linton John R
• Kazlas Peter T
• Breen Craig
• Coe-Sullivan Seth

Classifications

• C09K11/883

  with zinc or cadmium · CPC title

• C09D7/68

  Particle size between 100-1000 nm · CPC title

• C08K3/22

  of metals · CPC title

• C08K9/00

  Use of pretreated ingredients · CPC title

• C09K11/02

  Use of particular materials as binders, particle coatings or suspension media therefor · CPC title