# US 2025/0098516 A1 · Organometallic Complex, Light-Emitting Element, Light-Emitting Device, Electronic Device, and Lighting Device

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- Number: US 2025/0098516 A1
- Document ID: US20250098516A1
- Status: Published application
- Kind: A1
- Application number: 18/967,253
- Filed: 2024-12-03
- Published: 2025-03-20
- Earliest claimed: 2011-12-23
- Assignees: Semiconductor Energy Laboratory Co., Ltd.
- Applicants: Semiconductor Energy Laboratory Co., Ltd.
- Inventors: Hideko INOUE; Tomoya YAMAGUCHI; Hiromi SEO; Satoshi SEO; Kunihiko SUZUKI; Miki KANAMOTO
- Web page: https://patentgrep.com/patent/US20250098516A1

## CPC

- H10K 85/342: {comprising iridium}
- C07F 15/0033: {Iridium compounds}
- C09K 11/025: {non-luminescent particle coatings or suspension media}
- C09K 11/06: containing organic luminescent materials
- H05B 33/10: Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
- H10K 85/633: {comprising polycyclic condensed aromatic hydrocarbons as substituents on the nitrogen atom}
- H10K 85/6576: {comprising only sulfur in the heteroaromatic polycondensed ring system, e.g. benzothiophene}
- C09K 2211/1007: Non-condensed systems
- C09K 2211/1044: containing two nitrogen atoms as heteroatoms
- C09K 2211/1059: containing three nitrogen atoms as heteroatoms
- C09K 2211/185: of the platinum group, i.e. Os, Ir, Pt, Ru, Rh or Pd
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 85/626: {containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene}
- H10K 2101/10: Triplet emission
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- C07F: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM (metal-containing porphyrins C07D487/22)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL

## Abstract

As a novel substance having a novel skeleton, an organometallic complex with high emission efficiency which achieves improved color purity by a reduction of half width of an emission spectrum is provided. One embodiment of the present invention is an organometallic complex in which a β-diketone and a six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom are ligands. In General Formula (G1), X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom. Further, R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.

## Claims

### Claim 1

An organometallic complex represented by General Formula (G1),
wherein X represents a substituted or unsubstituted six-membered heteroaromatic ring including two or more nitrogen atoms inclusive of a nitrogen atom that is a coordinating atom, and
wherein R1 to R4 each represent a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms.