Light-emitting device and electronic apparatus including the same

Patent metadata

Field	Value
Publication number	US-2024284697-A1
Application number	US-202318482327-A
Country	US
Kind code	A1
Filing date	Oct 6, 2023
Priority date	Feb 2, 2023
Publication date	Aug 22, 2024
Grant date	—

Abstract

A light-emitting device including an anode, a cathode, a first emission layer arranged on the anode and including a first phosphorescent emitter, and a second emission layer arranged on the first emission layer and including a first fluorescent emitter and a second phosphorescent emitter.

First claim

What is claimed is:

1 . A light-emitting device comprising:
an anode; a cathode facing the anode; a first emission layer arranged on the anode and comprising a first phosphorescent emitter; and a second emission layer arranged on the first emission layer and comprising a first fluorescent emitter and a second phosphorescent emitter, wherein a decay time T decay (1) of the first emission layer is shorter than a decay time T decay (2) of the second emission layer.

2 . The light-emitting device of claim 1 , wherein the first emission layer and the second emission layer each independently comprise at least one of a first host or a second host.

3 . The light-emitting device of claim 2 , wherein the first host is a hole-transporting host, and the second host is an electron-transporting host.

4 . The light-emitting device of claim 2 , wherein the first host comprises at least one carbazole moiety, and the second host comprises at least one azine moiety.

5 . The light-emitting device of claim 2 , wherein the first host comprises a compound represented by Formula 1:

wherein, in Formulae 1 and 1A,
CY 11 to CY 14 are each independently an unsubstituted or substituted C 5 -C 30 carbocyclic group or an unsubstituted or substituted C 1 -C 30 heterocyclic group,
E 1 is a group represented by Formula 1A,
k 1 is an integer from 0 to 5,
n11 is an integer from 0 to 3,
n12 is an integer from 0 to 3,
R 11 to R 17 are each independently deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted C 1 -C 60 heteroaryloxy group, a substituted or unsubstituted C 1 -C 60 heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —Si(Q 1 )(Q 2 )(Q 3 ), —Ge(Q 1 )(Q 2 )(Q 3 ), —N(Q 4 )(Q 5 ), —B(Q 6 )(Q 7 ), or —P(═O)(Q 8 )(Q 9 ),
b15 and b16 are each independently an integer from 0 to 4,
b17 is an integer from 0 to 5,
b11 to b14 are each independently an integer from 0 to 10,
* indicates a binding site to a neighboring atom,
wherein Q 1 to Q 9 , are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 2 -C 30 alkenyl group, a substituted or unsubstituted C 2 -C 30 alkynyl group, a substituted or unsubstituted C 1 -C 30 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 6 -C 30 aryloxy group, a substituted or unsubstituted C 6 -C 30 arylthio group, a substituted or unsubstituted C 1 -C 30 heteroaryl group, a substituted or unsubstituted C 1 -C 30 heteroaryloxy group, a substituted or unsubstituted C 1 -C 30 heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, or a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group.

6 . The light-emitting device of claim 2 , wherein the second host comprises a compound represented by Formula 2:

wherein, in Formula 2,
CY 23 and CY 24 are each independently a C 5 -C 30 carbocyclic group or a C 1 -C 30 heterocyclic group,
X 21 is N or C(R 21a ), X 22 is N or C(R 22a ), X 23 is N or C(R 23a ), and at least one of X 21 to X 23 is N,
L 21 and L 22 are each independently a single bond, a substituted or unsubstituted C 3 -C 60 carbocyclic group, or a substituted or unsubstituted C 1 -C 60 heterocyclic group,
n21 and n22 are each independently an integer from 1 to 5,
R 21 to R 24 , R 21a , R 22a , and R 23a are each independently deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C 1 -C 60 alkyl group, a substituted or unsubstituted C 2 -C 60 alkenyl group, a substituted or unsubstituted C 2 -C 60 alkynyl group, a substituted or unsubstituted C 1 -C 60 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 2 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 60 aryl group, a substituted or unsubstituted C 6 -C 60 aryloxy group, a substituted or unsubstituted C 6 -C 60 arylthio group, a substituted or unsubstituted C 1 -C 60 heteroaryl group, a substituted or unsubstituted C 1 -C 60 heteroaryloxy group, a substituted or unsubstituted C 1 -C 60 heteroarylthio group, a substituted or unsubstituted monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —Si(Q 1 )(Q 2 )(Q 3 ), —Ge(Q 1 )(Q 2 )(Q 3 ), —N(Q 4 )(Q 5 ), —B(Q 6 )(Q 7 ), or —P(═O)(Q 8 )(Q 9 ),
b21 to b24 are each independently an integer from 1 to 10,
wherein Q 1 to Q 9 , are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amino group, an amidino group, a hydrazine group, a hydrazone group, a carboxylic acid group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, a substituted or unsubstituted C 1 -C 30 alkyl group, a substituted or unsubstituted C 2 -C 30 alkenyl group, a substituted or unsubstituted C 2 -C 30 alkynyl group, a substituted or unsubstituted C 1 -C 30 alkoxy group, a substituted or unsubstituted C 3 -C 10 cycloalkyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkyl group, a substituted or unsubstituted C 3 -C 10 cycloalkenyl group, a substituted or unsubstituted C 1 -C 10 heterocycloalkenyl group, a substituted or unsubstituted C 6 -C 30 aryl group, a substituted or unsubstituted C 6 -C 30 aryloxy group, a substituted or unsubstituted C 6 -C 30 arylthi

Assignees

• Samsung Electronics Co Ltd

Inventors

• Kim Joonghyuk
• Kang Giwook

Classifications

• H10K85/371

  Metal complexes comprising a group IB metal element, e.g. comprising copper, gold or silver · CPC title

• H10K85/341

  Transition metal complexes, e.g. Ru(II)polypyridine complexes (H10K85/331 takes precedence) · CPC title

• H10K85/346

  comprising platinum · CPC title

• H10K85/30

  Coordination compounds · CPC title

• H10K50/12 Primary

  comprising dopants · CPC title