US 12,359,119 B2
Organic electroluminescence device and polycyclic compound for organic electroluminescence device
Miyazaki Yuuki, Tsurumi-ku (JP)
Assigned to Samsung Display Co., Ltd., Yongin-si (KR)
Filed by Samsung Display Co., Ltd., Yongin-si (KR)
Filed on Aug. 28, 2019, as Appl. No. 16/553,787.
Claims priority of application No. 10-2018-0158373 (KR), filed on Dec. 10, 2018.
Prior Publication US 2020/0185626 A1, Jun. 11, 2020
Int. Cl. H10K 85/40 (2023.01); C07F 7/08 (2006.01); C07F 9/6584 (2006.01); C07F 9/6596 (2006.01); C09K 11/06 (2006.01); H10K 50/11 (2023.01); H10K 85/60 (2023.01); H10K 101/10 (2023.01)
CPC C09K 11/06 (2013.01) [C07F 7/0812 (2013.01); C07F 7/0816 (2013.01); C07F 9/6584 (2013.01); C07F 9/6596 (2013.01); H10K 85/40 (2023.02); H10K 85/657 (2023.02); H10K 85/658 (2023.02); C09K 2211/1011 (2013.01); C09K 2211/1014 (2013.01); C09K 2211/1018 (2013.01); C09K 2211/1022 (2013.01); H10K 50/11 (2023.02); H10K 2101/10 (2023.02)] 16 Claims
OG exemplary drawing
 
1. An organic electroluminescence device, comprising:
a first electrode;
a hole transport region on the first electrode;
an emission layer on the hole transport region;
an electron transport region on the emission layer; and
a second electrode on the electron transport region,
wherein the first electrode and the second electrode each independently comprise at least one selected from Ag, Mg, Cu, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr, Li, Ca, LiF/Ca, LiF/AI, Mo, Ti, In, Sn, Zn, a compound of two or more thereof, a mixture of two or more thereof, and oxides thereof, and
wherein the emission layer comprises a polycyclic compound represented by the following Formula 1:

OG Complex Work Unit Chemistry
in Formula 1,
Y is P, or P═O,
Z1 and Z2 are each independently B,
ring A to ring C are each independently a substituted or unsubstituted aryl ring having 6 to 30 carbon atoms that form a ring, or a substituted or unsubstituted heteroaryl ring having 2 to 30 carbon atoms that form a ring,
X1 and X2 are each independently a substituted or unsubstituted aryl group having 6 to 30 carbon atoms that form a ring, or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms that form a ring,
at least one substituent bonded to at least one selected from ring A to ring C, X1, and X2 is —Si(Ra)3 or —Si(Ra)2—, and
Ra is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms that form a ring, or a substituted or unsubstituted heteroaryl group having 2 to 30 carbon atoms that form a ring, and
wherein the polycyclic compound emits thermally activated delayed fluorescence.