US 11,746,286 B2
Core-shell type quantum dot, preparation method and use thereof
Aidi Zhang, Beijing (CN)
Assigned to BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 16/640,172
Filed by BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed May 28, 2019, PCT No. PCT/CN2019/088726
§ 371(c)(1), (2) Date Feb. 19, 2020,
PCT Pub. No. WO2020/010938, PCT Pub. Date Jan. 16, 2020.
Claims priority of application No. 201810764067.0 (CN), filed on Jul. 12, 2018.
Prior Publication US 2021/0130683 A1, May 6, 2021
Prior Publication US 2022/0025253 A9, Jan. 27, 2022
Int. Cl. C09K 11/88 (2006.01); C09K 11/56 (2006.01); C09K 11/61 (2006.01); C09K 11/02 (2006.01); C01B 17/98 (2006.01); C01B 19/04 (2006.01); B82Y 20/00 (2011.01); B82Y 30/00 (2011.01); B82Y 40/00 (2011.01)
CPC C09K 11/025 (2013.01) [C01B 17/98 (2013.01); C01B 19/04 (2013.01); C09K 11/565 (2013.01); C09K 11/616 (2013.01); C09K 11/883 (2013.01); B82Y 20/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C01P 2004/64 (2013.01); C01P 2006/16 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A core-shell type quantum dot comprising a quantum dot core, a light-transmitting inorganic mesoporous material layer on a surface of the quantum dot core, and a filler different from the inorganic mesoporous material in mesopores of the light-transmitting inorganic mesoporous material layer,
wherein the filler is a fluorescent-responsive substance, and
wherein the fluorescent responsive substance is one or more substances selected from the group consisting of NaYF4, NaLuF4, NaGdF4, NaYbF4 nanoparticles, NaYF4, NaLuF4, NaGdF4, NaYbF4 nanoparticles doped with one or more rare earth ions selected from Yb3+, Er3+, Tm3+, and Ho3+, fluorescein isothiocyanic acid, phycoerythrin, AlexaFluor series dyes, rhodamine series dyes, and compounds and conjugated polymers containing a benzene ring or a heterocyclic ring and conjugated double bonds.