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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 11205757 B1

PDFFull Text
Date of Patent:
Dec. 21, 2021

Filed:

Nov. 06, 2015

Core-shell structured perovskite particle light-emitter, method of preparing the same and light emitting device using the same

Applicant:

Postech Academy-industry Foundation, Pohang-si, KR;

Inventors:

Taewoo Lee, Pohang-si, KR;

Sanghyuk Im, Hwaseong-si, KR;

Younghoon Kim, Daejeon, KR;

Himchan Cho, Daegu, KR;

Assignee:

SN DISPLAY CO., LTD.;

Attorney:

Renaissance IP Law Group LLP

Primary Examiner:

Niki Bakhtiari

Int. Cl.
CPC ...
H01L 51/50 (2006.01); H01L 51/00 (2006.01); C09K 11/02 (2006.01); C09K 11/06 (2006.01); C09K 11/66 (2006.01); H01G 9/20 (2006.01); H01L 51/42 (2006.01); B01J 13/06 (2006.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01); B82Y 30/00 (2011.01);
U.S. Cl.
CPC ...
H01L 51/0077 (2013.01); B01J 13/06 (2013.01); C09K 11/025 (2013.01); C09K 11/06 (2013.01); C09K 11/665 (2013.01); H01G 9/2059 (2013.01); H01L 51/0007 (2013.01); H01L 51/426 (2013.01); H01L 51/5032 (2013.01); B82Y 20/00 (2013.01); B82Y 30/00 (2013.01); B82Y 40/00 (2013.01); C09K 2211/10 (2013.01); C09K 2211/188 (2013.01); H01L 51/0037 (2013.01); H01L 51/4253 (2013.01); H01L 51/502 (2013.01); H01L 51/5012 (2013.01); Y10S 977/774 (2013.01); Y10S 977/812 (2013.01); Y10S 977/892 (2013.01); Y10S 977/948 (2013.01); Y10S 977/95 (2013.01);
Abstract

Provided are a core-shell structured perovskite particle light-emitter, a method of preparing the same, and a light emitting device using the same. The core-shell structured perovskite particle light-emitter or metal halide perovskite particle light-emitter has a perovskite nanocrystal structure and a core-shell structured particle structure. Therefore, in the perovskite particle light-emitter of the present invention, as a shell is formed of a substance having a wider band gap than that of a core, excitons may be more dominantly confined in the core, and durability of the nanocrystal may be improved to prevent exposure of the core perovskite to the air using a perovskite or inorganic semiconductor, which is stable in the air, or a polymer.

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