US 11,927,838 B2
Quantum dots and devices including the same
Tae Gon Kim, Hwaseong-si (KR); Garam Park, Seoul (KR); Jooyeon Ahn, Suwon-si (KR); Shang Hyeun Park, Yongin-si (KR); and Shin Ae Jun, Seongnam-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Gyeonggi-Do (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Jul. 11, 2023, as Appl. No. 18/220,364.
Application 18/220,364 is a division of application No. 16/697,650, filed on Nov. 27, 2019, granted, now 11,740,495.
Claims priority of application No. 10-2018-0151184 (KR), filed on Nov. 29, 2018.
Prior Publication US 2023/0350237 A1, Nov. 2, 2023
Int. Cl. C09K 11/70 (2006.01); B82Y 20/00 (2011.01); C09K 11/02 (2006.01); C09K 11/08 (2006.01); C09K 11/62 (2006.01); C09K 11/88 (2006.01); G02F 1/017 (2006.01); H01L 33/06 (2010.01); H01L 33/28 (2010.01); H01L 33/30 (2010.01); H01L 33/34 (2010.01); H10K 50/115 (2023.01)
CPC G02F 1/01716 (2013.01) [B82Y 20/00 (2013.01); C09K 11/02 (2013.01); C09K 11/025 (2013.01); C09K 11/0811 (2013.01); C09K 11/0883 (2013.01); C09K 11/62 (2013.01); C09K 11/883 (2013.01); H01L 33/06 (2013.01); H01L 33/28 (2013.01); H01L 33/30 (2013.01); H01L 33/34 (2013.01); H10K 50/115 (2023.02); G02F 1/01791 (2021.01)] 20 Claims
OG exemplary drawing
 
1. A method of producing a quantum dot, comprising
preparing a zinc precursor not comprising a halogen;
reacting a Lewis base with sulfur to prepare a sulfur precursor;
reacting a Lewis acid metal halide comprising a metal with the Lewis base to obtain an acid base adduct comprising the metal and halogen; and
reacting the zinc precursor and the sulfur precursor in the presence of the acid base adduct and a zinc halide to form a first semiconductor nanocrystal comprising zinc and sulfur and produce the quantum dot,
wherein the quantum dot comprises
a core and
a shell disposed on the core,
wherein one of the core and the shell comprises the first semiconductor nanocrystal comprising zinc and sulfur and the other of the core and the shell comprises a second semiconductor nanocrystal having a different composition from the first semiconductor nanocrystal.