Light-emitting device and electronic apparatus including the same

Patent metadata

Field	Value
Publication number	US-12514112-B2
Application number	US-202217831724-A
Country	US
Kind code	B2
Filing date	Jun 3, 2022
Priority date	Nov 2, 2021
Publication date	Dec 30, 2025
Grant date	Dec 30, 2025

Abstract

A light-emitting device includes a first electrode, and second electrode facing the first electrode, and an interlayer between the first electrode and the second electrode. The interlayer includes an emission layer and a layer. The emission layer includes a first hole transport compound, a first electron transport compound, and a third compound. The layer includes the first electron transport compound, a metal-containing material, and a second electron transport compound, and the layer is between the emission layer and the second electrode.

First claim

What is claimed is:

1 . A light-emitting device comprising: a first electrode; a second electrode facing the first electrode; and an interlayer disposed between the first electrode and the second electrode, wherein the interlayer comprises: an emission layer; and a layer, the emission layer comprises: a first hole transport compound; a first electron transport compound; and a third compound, and the layer comprises: the first electron transport compound; a metal-containing material; and a second electron transport compound, and the layer is disposed between the emission layer and the second electrode, wherein the first hole transport compound comprises a carbazole moiety and comprises neither a triazine moiety, a pyrimidine moiety, nor a pyridine moiety, the first electron transport compound comprises a Si moiety and comprises a triazine moiety, a pyrimidine moiety, or a pyridine moiety, and the second electron transport compound comprises a triazine moiety.

2 . The light-emitting device of claim 1 , wherein
the layer is doped with the first electron transport compound, and the layer has a doping concentration greater than 0 wt % and equal to or less than about 20 wt %.

3 . The light-emitting device of claim 1 , wherein the layer and the emission layer contact each other.

4 . The light-emitting device of claim 1 , further comprising a buffer layer disposed between the emission layer and the layer.

5 . The light-emitting device of claim 4 , wherein the buffer layer contacts the emission layer and the layer.

6 . The light-emitting device of claim 1 , wherein the first hole transport compound is represented by Formula 1:

wherein in Formula 1,
R 1 to R 3 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C 1 -C 60 alkyl group unsubstituted or substituted with at least one R 10a , a C 2 -C 60 alkenyl group unsubstituted or substituted with at least one R 10a , a C 2 -C 60 alkynyl group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 alkoxy group unsubstituted or substituted with at least one R 10a , a C 3 -C 10 cycloalkyl group unsubstituted or substituted with at least one R 10a , a C 1 -C 10 Cheterocycloalkyl group unsubstituted or substituted with at least one R 10a , a C 3 -C 10 cycloalkenyl group unsubstituted or substituted with at least one R 10a , a C 1 -C 10 Cheterocycloalkenyl group unsubstituted or substituted with at least one R 10a , a C 6 -C 60 aryl group unsubstituted or substituted with at least one R 10a , a C 6 -C 60 aryloxy group unsubstituted or substituted with at least one R 10a , a C 6 -C 60 arylthio group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 heteroaryl group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 heteroaryloxy group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 heteroarylthio group unsubstituted or substituted with at least one R 10a , a monovalent non-aromatic condensed polycyclic group unsubstituted or substituted with at least one R 10a , a monovalent non-aromatic condensed heteropolycyclic group unsubstituted or substituted with at least one R 10a , —Si(Q 1 )(Q 2 )(Q 3 ), —B(Q 1 )(Q 2 ), —N(Q 1 )(Q 2 ), —P(Q 1 )(Q 2 ), —C(═O)(Q 1 ), —S(═O)(Q 1 ), —S(═O) 2 (Q 1 ), —P(═O)(Q 1 )(Q 2 ), or —P(═S)(Q 1 )(Q 2 ),
a triazine moiety, a pyrimidine moiety, and a pyridine moiety are excluded from R 1 to R 3 ,
a2 and a3 are each independently an integer from 1 to 4,
R 10a is:
deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, or a nitro group;
a C 1 -C 6 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, or a C 1 -C 60 alkoxy group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C 3 -C 60 carbocyclic group, a C 1 -C 60 heterocyclic group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 7 -C 60 arylalkyl group, a C 2 -C 60 heteroaryl alkyl group, —Si(Q 11 )(Q 12 )(Q 13 ), —N(Q 11 )(Q 12 ), —B(Q 11 )(Q 12 ), —C(═O)(Q 11 ), —S(═O) 2 (Q 11 ), —P(═O)(Q 11 )(Q 12 ), or a combination thereof;
a C 3 -C 60 carbocyclic group, a C 1 -C 60 heterocyclic group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 7 -C 60 arylalkyl group, or a C 2 -C 60 heteroaryl alkyl group, each unsubstituted or substituted with deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, a C 1 -C 60 alkyl group, a C 2 -C 60 alkenyl group, a C 2 -C 60 alkynyl group, a C 1 -C 60 alkoxy group, a C 3 -C 60 carbocyclic group, a C 1 -C 60 heterocyclic group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 7 -C 60 arylalkyl group, a C 2 -C 60 heteroaryl alkyl group, —Si(Q 21 )(Q 22 )(Q 23 ), —N(Q 21 )(Q 22 ), —B(Q 21 )(Q 22 ), —C(═O)(Q 21 ), —S(═O) 2 (Q 21 ), —P(═O)(Q 21 )(Q 22 ), or a combination thereof; or
—Si(Q 31 )(Q 32 )(Q 33 ), —N(Q 31 )(Q 32 ), —B(Q 31 )(Q 32 ), —C(═O)(Q 31 ), —S(═O) 2 (Q 31 ), or —P(═O)(Q 31 )(Q 32 ), and
Q 1 to Q 3 , Q 11 to Q 13 , Q 21 to Q 23 , and Q 31 to Q 33 are each independently: hydrogen; deuterium; —F; —Cl; —Br; —I; a hydroxyl group; a cyano group; a nitro group; a C 1 -C 60 alkyl group; a C 2 -C 60 alkenyl group; a C 2 -C 60 alkynyl group; a C 1 -C 60 alkoxy group; or a C 3 -C 60 carbocyclic group, a C 1 -C 60 heterocyclic group, a C 7 -C 60 arylalkyl group, or a C 2 -C 60 heteroaryl alkyl group, each unsubstituted or substituted with deuterium, —F, a cyano group, a C 1 -C 60 alkyl group, a C 1 -C 60 alkoxy group, a phenyl group, a biphenyl group, or a combination thereof.

7 . The light-emitting device of claim 1 , wherein the first hole transport compound is selected from Compounds HTH-1 to HTH-32:

8 . The light-emitting device of claim 1 , wherein the first electron transport compound is represented by Formula 2:

wherein in Formula 2,
X 1 to X 3 are each independently CH or N,
at least one of X 1 to X 3 is N,
R 10 to R 12 are each independently a group represented by Formula 2-1, hydrogen, deuterium, —F, —Cl, —Br, —I, a hydroxyl group, a cyano group, a nitro group, an amidino group, a hydrazino group, a hydrazono group, a C 1 -C 60 alkyl group unsubstituted or substituted with at least one R 10a , a C 2 -C 60 alkenyl group unsubstituted or substituted with at least one R 10a , a C 2 -C 60 alkynyl group unsubstituted or substituted with at least one R 10a , a C 1 -C 60 alkoxy group unsubstituted or substituted with at least one

Assignees

• Samsung Display Co Ltd

Inventors

• Um Hyunah
• Kim Hyeongmin
• Park Youngjin
• Ahn Heechoon
• Yun Juhui
• Lee Yeseul
• Lee Hyoyoung

Classifications

• H10K85/6572

  comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole · CPC title

• H10K85/654

  comprising only nitrogen as heteroatom (H10K85/652 takes precedence) · CPC title

• H10K50/165

  comprising dopants · CPC title

• H10K50/15

  Hole transporting layers · CPC title

• H10K85/346

  comprising platinum · CPC title