Organic light-emitting element, display apparatus, photoelectric conversion apparatus, electronic equipment, lighting apparatus, moving body, and exposure light source

An organic light-emitting element comprising:

• a positive electrode, a light-emitting layer, and a negative electrode in this order,
• wherein the light-emitting layer contains a dopant material, a host material, and an assist material,
• the dopant material is a compound represented by the following general formula [1],
• the host material is an aromatic hydrocarbon compound, and
• the assist material has a lower LUMO level than the host material (farther from the vacuum level),
• wherein R1 to R7, R9, and R10 independently denote a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a substituted or unsubstituted silyl group, or a cyano group,
• R8 denotes a phenyl group,
• X denotes O or S,
• m denotes an integer in the range of 1 to 3, and n denotes an integer in the range of 0 to 2, provided that m+n is 3, and
• the partial structure IrLn is any one of structures represented by the following general formulae [2] and [3],
• wherein R11 to R21 independently denote a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a substituted or unsubstituted silyl group, or a cyano group.

An organic light-emitting element comprising:

• a positive electrode, a light-emitting layer, and a negative electrode in this order,
• wherein the light-emitting layer contains a dopant material, a host material, and an assist material,
• wherein the dopant material is any one of the following compounds,
• the host material is an aromatic hydrocarbon compound, and
• the assist material has a lower LUMO level than the host material (farther from the vacuum level),
• wherein R1 to R10 independently denote a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a substituted or unsubstituted silyl group, or a cyano group,
• X denotes O or S,
• m denotes an integer in the range of 1 to 3, and n denotes an integer in the range of 0 to 2, provided that m+n is 3, and
• the partial structure IrLn is any one of structures represented by the following general formulae [2] and [3],
• wherein R11 to R21 independently denote a hydrogen atom, a deuterium atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a substituted or unsubstituted heteroaryloxy group, a substituted or unsubstituted silyl group, or a cyano group.