US 12,187,941 B2
Core shell quantum dot and electronic device including the same
Yuho Won, Seoul (KR); Yong Wook Kim, Yongin-si (KR); Eun Joo Jang, Suwon-si (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 Jul. 18, 2022, as Appl. No. 17/866,983.
Application 17/866,983 is a continuation of application No. 16/739,595, filed on Jan. 10, 2020, granted, now 11,390,804.
Claims priority of application No. 10-2019-0004231 (KR), filed on Jan. 11, 2019.
Prior Publication US 2022/0348824 A1, Nov. 3, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. C09K 11/88 (2006.01); C09K 11/54 (2006.01); C09K 11/56 (2006.01); H01L 33/06 (2010.01); H01L 33/28 (2010.01)
CPC C09K 11/883 (2013.01) [C09K 11/54 (2013.01); C09K 11/565 (2013.01); H01L 33/06 (2013.01); H01L 33/28 (2013.01)] 15 Claims
OG exemplary drawing
 
1. Quantum dots comprising zinc, selenium, tellurium, and sulfur,
wherein the quantum dots are configured to emit green light having a maximum peak wavelength of greater than or equal to 500 nanometers and less than or equal to 550 nm,
wherein the quantum dots as a whole have a mole ratio Te:Se of tellurium relative to selenium of greater than about 0.05:1 and less than or equal to about 0.5:1,
wherein the quantum dots do not include cadmium, and the quantum dots exhibit a quantum efficiency of greater than or equal to 60% or a full width at half maximum of less than or equal to 50 nanometers, and
wherein the quantum dots as a whole have a mole ratio of sulfur to zinc that is greater than or equal to about 0.3:1.