Abstract: An organic light emitting device including, in sequence, an anode, a light emitting layer, a first electron transport layer, a second electron transport layer, and a cathode, wherein the second electron transport layer includes a first material and a second material different from the first material, and the first electron transport layer includes a third material and a fourth material different from the third material.

Abstract: An organic compound represented by formula [1] is provided. Ring A is a polycyclic aromatic hydrocarbon ring having a fluoranthene skeleton and having 16 to 60 carbon atoms and optionally has, as a substituent, a substituted or unsubstituted alkyl group or the like. Rings B1 and B2 are aromatic hydrocarbon rings having 6 to 18 carbon atoms and each have two or more electron withdrawing groups. Q1 and Q2 respectively represent one of the electron withdrawing groups of the ring B1 and one of the electron withdrawing groups of the ring B2, and are respectively located at an ortho position of the ring B1 and at an ortho position of the ring B2 with respect to the ring A.

Abstract: An organic light-emitting element including: a first electrode; a first light-emitting unit; a charge generation portion; a second light-emitting unit; and a second electrode in this order, wherein the charge generation portion includes at least one n-type charge generation layer, the n-type charge generation layer contains at least a first organic compound and a second organic compound.

Abstract: An organic light-emitting device includes, in sequence, a first electrode, a first light-emitting layer, a charge transport layer, a charge generation portion, a second light-emitting layer, and a second electrode. The charge transport layer contains a fused polycyclic hydrocarbon compound.

Abstract: An organic EL device includes at least an anode, a first light-emitting layer, an intermediate layer, a second light-emitting layer, and a cathode in this order. The intermediate layer is adjacent to the first light-emitting layer and the second light-emitting layer. The first light-emitting layer and the second light-emitting layer can trap electrons. A material constituting the intermediate layer is a hydrocarbon that has a HOMO level equal to or lower than the HOMO level of a host of the first light-emitting layer and that has a high S1 level.

Abstract: An organic light emitting device including, in sequence, a first electrode, a first charge transport layer, a second charge transport layer in contact with the first charge transport layer, a light emitting layer in contact with the second charge transport layer, and a second electrode, wherein the first charge transport layer includes a first material and a second material, the second charge transport layer includes the second material and a third material, and the light emitting layer includes the third material and a fourth material.

Abstract: An organic compound represented by formula [1]. In the formula rings Q represented by formula [1-1] are each independently present at positions *1 and *2 such that positions * of the rings Q correspond to the positions *1 and *2. The rings Q may be the same or different. R4 and R5 represent groups each independently selected from the group consisting of a hydrogen atom and a substituted or unsubstituted aryl group. The rings Q are aromatic hydrocarbons. R1 to R3 represent groups each independently selected from the group consisting of a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, and a cyano group. At least one of R1 to R3 represents a cyano group.

Abstract: An organic light emitting device including, in sequence, a first electrode, a first charge transport layer, a second charge transport layer in contact with the first charge transport layer, a light emitting layer in contact with the second charge transport layer, and a second electrode, wherein the first charge transport layer includes a first material and a second material, the second charge transport layer includes the second material and a third material, and the light emitting layer includes the third material and a fourth material.

Abstract: An organic compound represented by formula [1]. The compounds are of the class of diacenaphthochrysene compound, useful as organic light emitting device. In the formula [1], R1 to R18 are each independently selected from the group consisting of a hydrogen atom and a substituent.

Abstract: An organic compound represented by formula (1). In the formula (1), R1 to R18 are each independently selected from the group consisting of a hydrogen atom and a substituent. At least one of R1 to R18 represents a substituent. The substituent is an aryl group having at least one cyano group or a heterocyclic group having at least one cyano group.

Abstract: An organic light emitting device including, in sequence, a first electrode, a first charge transport layer, a second charge transport layer in contact with the first charge transport layer, a light emitting layer in contact with the second charge transport layer, and a second electrode, wherein the first charge transport layer includes a first material and a second material, the second charge transport layer includes the second material and a third material, and the light emitting layer includes the third material and a fourth material.

Abstract: The present disclosure relates to an organic light-emitting device including an insulating layer, an organic light-emitting element disposed on the main surface of the insulating layer, and a color filter layer covering the organic light-emitting element and including a first color filter that passes light with a first wavelength and a second color filter that passes light with a second wavelength different from the first wavelength, wherein the concentration of an organic alkali having a nitrogen atom and a hydroxy group contained in the color filter layer is less than 108.2 ng/cm2.

Abstract: A layered type organic electroluminescence element including two organic electroluminescence layers disposed between a positive electrode and a negative electrode with an intermediate layer interposed therebetween, wherein the intermediate layer contains an alkali metal compound, a reduced form of the alkali metal compound, and a metal element of group II of the periodic table.

Abstract: The present disclosure provides an organic compound that has a mother skeleton with a fused-ring structure, an electron-withdrawing group bonded to the mother skeleton, and an electron-donating group bonded to the mother skeleton, wherein the electron-withdrawing group is bonded at a position satisfying the following relationship in the mother skeleton.

Abstract: An organic compound represented by formula [1]: where R1 to R14 are each independently selected from the group consisting of a hydrogen atom and substituents, wherein at least one of R1 to R4 and R8 to R11 is an amino group or an amino group-containing group, and X is oxygen, sulfur, selenium, tellurium, or a CR15R16 group, wherein R15 and R16 are each independently selected from the group consisting of a hydrogen atom and substituents.

Abstract: An organic compound, represented by formula [1] or [2], suitably used for a thermally activated delayed fluorescent device: where X1 to X18 and X21 to X38 are each independently selected from the group consisting of a hydrogen atom, and substituents, Y is oxygen, sulfur, selenium, tellurium, a CR1R2 group, or a carbonyl group, where R1 and R2 are each independently selected from the group consisting of a hydrogen atom, and substituents, and Z is an alkyl group, an aryl group, or a heterocyclic group.

Abstract: An organic light-emitting element including a first electrode, a second electrode, and a light-emitting layer located between the first electrode and the second electrode. The light-emitting layer contains a first organic compound material, a second organic compound that is a delayed fluorescent material, and a third organic compound that is a light-emitting material. In the second organic compound, an electron is transferred from a plurality of occupied molecular orbitals (OMO) to a lowest unoccupied molecular orbital (LUMO) in a second excited triplet state.

Abstract: An organic compound represented by formula [1]: where in formula [1], R1 to R6 are each independently selected from the group consisting of a hydrogen atom, a hydrocarbon group, and other substituents having a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group, at least one of R1 to R6 is one of the other substituents, at least any one of R1 and R2 is a hydrogen atom or a hydrocarbon group, at least any one of R3 and R4 is a hydrogen atom or a hydrocarbon group, and at least any one of R5 and R6 is a hydrogen atom.

Abstract: Provided is a photoelectric conversion element including an anode, a photoelectric conversion layer that contains a first organic semiconductor, a second organic semiconductor, and a third organic semiconductor, and a cathode. As each of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor, a low-molecular weight organic semiconductor is used. The first organic semiconductor, the second organic semiconductor, and the third organic semiconductor have mass ratios that satisfy the following relationship: the first organic semiconductor?the second organic semiconductor?the third organic semiconductor. Further, when a total amount of the first organic semiconductor, the second organic semiconductor, and the third organic semiconductor is 100 mass %, a content of the second organic semiconductor is 6 mass % or more, and a content of the third organic semiconductor is 3 mass % or more.

Abstract: An organic photoelectric conversion element includes an electron-collecting electrode, a hole-collecting electrode, and a photoelectric conversion portion which is disposed between the electron-collecting electrode and the hole-collecting electrode. The photoelectric conversion portion includes a first organic compound layer. A second organic compound layer is disposed between the hole-collecting electrode and the photoelectric conversion portion. The first organic compound layer contains a first compound having at least a fullerene skeleton and a second compound having a fluoranthene skeleton.