US 12,356,772 B2
Method of improving performance of devices with QDs comprising thin metal oxide coatings
Daekyoung Kim, Santa Clara, CA (US); Wenzhou Guo, San Jose, CA (US); Diego Barrera, San Jose, CA (US); and Ruiqing Ma, Morristown, NJ (US)
Assigned to SHOEI CHEMICAL INC., Tokyo (JP)
Filed by Shoei Chemical Inc., Tokyo (JP)
Filed on Jul. 8, 2021, as Appl. No. 17/370,218.
Claims priority of provisional application 63/049,387, filed on Jul. 8, 2020.
Prior Publication US 2022/0077354 A1, Mar. 10, 2022
Int. Cl. C09K 11/02 (2006.01); C09K 11/08 (2006.01); C09K 11/56 (2006.01); C09K 11/70 (2006.01); C09K 11/88 (2006.01); H10H 20/01 (2025.01); H10H 20/851 (2025.01)
CPC H10H 20/8513 (2025.01) [C09K 11/025 (2013.01); C09K 11/0883 (2013.01); C09K 11/565 (2013.01); C09K 11/70 (2013.01); C09K 11/883 (2013.01); H10H 20/01 (2025.01); H10H 20/0361 (2025.01)] 9 Claims
OG exemplary drawing
 
1. A method of making nanostructures, the nanostructures comprising a core/shell nanostructure comprising at least one shell, and a metal oxide on an outer shell of the core/shell nanostructure, wherein the metal oxide on the outer shell is less than 1 nm thick, the method comprising:
(a) admixing a plurality of the core/shell nanostructures and solvent;
(b) raising the temperature to between about 180° C. and about 360° C.; and
(c) exposing the composition obtained in (b) to water in an amount that is a molar ratio of 2,000 to 180,000 water:core/shell nanostructures.