US 12,312,526 B2
Quantum dots and devices including the same
Jihyun Min, Seoul (KR); Eun Joo Jang, Suwon-si (KR); Yuho Won, Seoul (KR); and Hyo Sook Jang, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Aug. 5, 2021, as Appl. No. 17/394,614.
Claims priority of application No. 10-2020-0098730 (KR), filed on Aug. 6, 2020.
Prior Publication US 2022/0041930 A1, Feb. 10, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 11/88 (2006.01); C09K 11/02 (2006.01); C09K 11/56 (2006.01); H10K 50/115 (2023.01); B82Y 20/00 (2011.01); B82Y 40/00 (2011.01)
CPC C09K 11/885 (2013.01) [C09K 11/883 (2013.01); H10K 50/115 (2023.02); B82Y 20/00 (2013.01); B82Y 40/00 (2013.01)] 24 Claims
OG exemplary drawing
 
1. A quantum dot comprising
a core comprising a first semiconductor nanocrystal, and
a semiconductor nanocrystal shell disposed on the core, a composition of the semiconductor nanocrystal shell being different from a composition of the first semiconductor nanocrystal,
wherein the quantum dot does not comprise cadmium,
wherein the semiconductor nanocrystal shell comprises a zinc chalcogenide,
wherein the zinc chalcogenide comprises selenium, tellurium, sulfur, or a combination thereof,
wherein the quantum dot further comprises an alkaline earth metal,
wherein the first semiconductor nanocrystal does not comprise an indium phosphide,
wherein the first semiconductor nanocrystal comprises zinc, tellurium, and selenium,
wherein in the quantum dot, a mole ratio of tellurium with respect to selenium is greater than 0:1 and less than or equal to about 0.1:1, and
wherein in the quantum dot, an amount of the alkaline earth metal is greater than or equal to about 0.001 moles and less than or equal to 0.5 moles, per one mole of zinc.