Organic light-emitting device

Patent metadata

Field	Value
Publication number	US-2021328157-A1
Application number	US-202117193089-A
Country	US
Kind code	A1
Filing date	Mar 5, 2021
Priority date	Apr 16, 2020
Publication date	Oct 21, 2021
Grant date	—

Abstract

Provided is an organic light-emitting device including an emission layer that includes a sensitizer, a fluorescent emitter, and a host.

First claim

What is claimed is:

1 . An organic light-emitting device comprising:
a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, wherein the organic layer comprises an emission layer, the emission layer comprises a sensitizer, a fluorescent emitter, and a host, the sensitizer comprises ruthenium (Ru), palladium (Pd), rhenium (Re), osmium (Os), platinum (Pt), or any combination thereof, and the sensitizer and the fluorescent emitter satisfy Inequality 1 below:
| E adia T1 (SE)− E vert 51 (FL)|<0.2 eV  Inequality 1

In Inequality 1, E adia T1 (SE) indicates an adiabatic triplet excitation energy of the sensitizer, and E vert S1 (FL) indicates a vertical singlet excitation energy of the fluorescent emitter.

2 . The organic light-emitting device of claim 1 , wherein the sensitizer comprises an organometallic compound represented by Formula 101 below:
M 11 (L 11 ) n11 (L 12 ) n12   Formula 101
In Formula 101, M 11 is Ru, Pd, Re, Os, or Pt; L 11 is a ligand represented by one of Formulae 1-1 to 1-4 below; L 12 is a monodentate ligand or a bidentate ligand; n11 is 1; and n12 is 0, 1, or 2, wherein when n12 is 2, then each occurrence of is the same or different, wherein, in Formulae 1-1 to 1-4, A 1 to A 4 are each independently a substituted or unsubstituted C 5 -C 30 carbocyclic group, a substituted or unsubstituted C 1 -C 30 heterocyclic group, or a non-cyclic group, Y 11 to Y 14 are each independently a chemical bond, O, S, N(R 91 ), B(R 91 ), P(R 91 ), or C(R 91 )(R 92 ), T 1 to T 4 are each independently a single bond, a double bond, *—N(R 93 )—*′, *—B(R 93 )—*′, *—P(R 93 )—*′, *—C(R 93 )(R 94 )—*′, *—Si(R 93 )(R 94 )—*′, *—Ge(R 93 )(R 94 )—*′, *—S—*′, *—Se—*′, *—O—*′, *—C(═O)—*′, *—S(═O)—*′, *—S(═O) 2 —*′, *—C(R 93 )=*′, *═C(R 93 )—*′, *—C(R 93 )═C(R 94 )—*′, *—C(═S)—*′, or*—C≡C—*′, a substituent of the C 5 -C 30 carbocyclic group, a substituent of the substituted C 1 -C 30 heterocyclic group, and R 91 to R 94 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, —SF 5 , a hydroxyl group, a cyano group, a nitro 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 1 -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 monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —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 ), * 1 , * 2 , * 3 , and * 4 each indicate a binding site to Mu, and Q 1 to Q 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, 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 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 7 -C 60 alkyl aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 2 -C 60 alkyl heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a C 1 -C 60 alkyl group that is substituted with at least one deuterium, —F, a cyano group, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof, or a C 6 -C 60 aryl group that is substituted with deuterium, —F, a cyano group, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof.

3 . The organic light-emitting device of claim 1 , wherein
the sensitizer comprises an organometallic compound represented by Formula 111 below:

In Formula 111,
M 11 , Y 11 to Y 14 , and T 1 to T 3 are each the same as described in claim 2 ,
A 11 to A 14 are each independently a substituted or unsubstituted C 5 -C 30 carbocyclic group, a substituted or unsubstituted C 1 -C 30 heterocyclic group, or a non-cyclic group,
X 10 , X 11 , X 20 to X 22 , X 30 to X 32 , X 40 , and X 41 are each independently C or N,
R 10 , R 20 , R 30 , and R 40 are each independently hydrogen, deuterium, —F, —Cl, —Br, —I, —SF 5 , a hydroxyl group, a cyano group, a nitro 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 1 -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 monovalent non-aromatic condensed polycyclic group, a substituted or unsubstituted monovalent non-aromatic condensed heteropolycyclic group, —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 ),
b10, b20, b30, and b40 are each independently an integer from 1 to 10, and
Q 1 to Q 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, 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 10 cycloalkyl group, a C 1 -C 10 heterocycloalkyl group, a C 3 -C 10 cycloalkenyl group, a C 1 -C 10 heterocycloalkenyl group, a C 6 -C 60 aryl group, a C 7 -C 60 alkyl aryl group, a C 6 -C 60 aryloxy group, a C 6 -C 60 arylthio group, a C 1 -C 60 heteroaryl group, a C 2 -C 60 alkyl heteroaryl group, a C 1 -C 60 heteroaryloxy group, a C 1 -C 60 heteroarylthio group, a monovalent non-aromatic condensed polycyclic group, a monovalent non-aromatic condensed heteropolycyclic group, a C 1 -C 60 alkyl group that is substituted with at least one deuterium, —F, a cyano group, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof, or a C 6 -C 60 aryl group that is substituted with at least one deuterium, —F, a cyano group, a C 1 -C 60 alkyl group, a C 6 -C 60 aryl group, or any combination thereof.

4 . The organ

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Hasup
• Kim Sangmo
• Kwon Eunsuk
• Kim Jong Soo
• Nam Sungho
• Min Minsik
• Bae Hyejin
• Choi Hyeonho

Classifications

• H10K85/346

  comprising platinum · CPC title

• C09K11/06 Primary

  containing organic luminescent materials · CPC title

• C09K2211/1011

  Condensed systems · CPC title

• H01L51/0054

  Electricity · mapped topic

• H01L51/5028

  Electricity · mapped topic