Abstract: A control valve assembly includes a housing accommodating an electromagnetic coil unit which is disposed in an in-housing passage and drives a valve element to open and close the in-housing passage. An inflow-outflow member is coupled to the housing, and includes an inflow portion having an inflow passage through which evaporative fuel flows toward the in-housing passage, and an outflow portion having an outflow passage through which the evaporative fuel from the in-housing passage flows. The outflow passage in the outflow portion and the inflow passage in the inflow portion communicate with each other through the in-housing passage.

Abstract: An organic electroluminescence device includes an anode, a second organic layer, a first organic layer, and a cathode in this order. The first organic layer contains a first compound and a second compound. The second organic layer contains a third compound. The first compound is a compound represented by a formula (1). The second compound is a delayed fluorescent compound. The third compound is a compound represented by a formula (3). In the formula (1), X is a nitrogen atom or a carbon atom bonded to Y, Y being a hydrogen atom or a substituent. In the formula (3), n is an integer ranging from 1 to 4, XB is a group represented by a formula (3A). In the formula (3A), Ar1 and Ar2 are each independently a monovalent or polyvalent aromatic hydrocarbon group, and Cz is a group represented by a formula (3B-1) or the like.

Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode. The emitting layer contains a first compound, a second compound, and a third compound, the first compound being a fluorescent compound, the second compound being a delayed fluorescent compound, the third compound being a compound represented by a formula (3). A singlet energy S1(M1) of the first compound, a singlet energy S1(M2) of the second compound, and a singlet energy S1(M3) of the third compound satisfy a relationship of a Numerical Formula 1. In the formula (3), X1 to X14 each independently represent a nitrogen atom or CR80. XA is NR95, a sulfur atom or an oxygen atom.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound, the first compound is a delayed fluorescent compound, the second compound is a fluorescent compound, an emission quantum efficiency of the first compound is 70% or less, and an ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy a relationship of 0?Ip2?Ip1?0.8 eV.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode. The emitting layer includes a first compound and a second compound. The first compound is a delayed fluorescent compound. The second compound is a fluorescent compound. A solution of the second compound in toluene has an emission peak wavelength in a range from 430 nm to 480 nm. A molar absorbance coefficient of the second compound at an absorption peak closest to a long-wavelength side is in a range from 29,000 L/(mol·cm) to 1,000,000 L/(mol·cm). The second compound has a Stokes shift in a range from 1 nm to 20 nm.

Abstract: The compound represented by formula (1): wherein A, B, R1, and R2 are as defined in the description, provides organic electroluminescence (EL) devices having a high emission efficiency when operated at low voltage and a long lifetime and electronic devices including such organic EL devices.

Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode. The emitting layer contains a delayed fluorescent first compound, a fluorescent second compound, and a third compound represented by Cz-Az. The second compound emits light with a main peak wavelength ranging from 430 nm to 540 nm. Az is a cyclic structure selected from the group consisting of a substituted or unsubstituted pyridine ring, a substituted or unsubstituted pyrimidine ring, a substituted or unsubstituted triazine ring, and a substituted or unsubstituted pyrazine ring. Cz is represented by a formula (3B) below.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound, the first compound is a delayed fluorescent compound, the second compound is a fluorescent compound, an emission quantum efficiency of the first compound is 70% or less, and an ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy a relationship of 0?Ip2?Ip1?0.8 eV.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer contains a first compound and a second compound, the first compound being a delayed fluorescent compound, the second compound being a compound represented by a formula (20).

Abstract: An organic EL apparatus includes a plurality of pixels including a first pixel and a second pixel, in which the first pixel has a first emitting layer containing a fluorescent first compound, the second pixel has a second emitting layer containing a delayed fluorescent second compound, and the first pixel and the second pixel share a common layer extending across the first pixel and the second pixel.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound, the first compound is a delayed fluorescent compound, the second compound is a fluorescent compound, an emission quantum efficiency of the first compound is 70% or less, and an ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy a relationship of 0?Ip2?Ip1?0.8 eV.

Abstract: An organic light-emitting medium including a pyrene derivative represented by the following formula (1) and a phenyl-substituted anthracene derivative represented by the following formula (2): wherein Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.

Abstract: An organic light-emitting medium including a pyrene derivative represented by the following formula (1) and a phenyl-substituted anthracene derivative represented by the following formula (2): wherein Ar1 to Ar4 are independently a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.

Abstract: An object of the invention is to provide a high-performance organic electroluminescence device and an electronic device including the organic electroluminescence device. An organic electroluminescence device includes an anode, a cathode and an emitting layer, in which the emitting layer includes a first compound and a second compound, the first compound is a delayed fluorescent compound, and the second compound is represented by a formula (2) below.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound, a second compound and a third compound. The first compound is a delayed fluorescent compound. The first compound has an energy gap T77K at 77 [K] larger than an energy gap T77K at 77 [K] of the second compound. The third compound has an energy gap T77K at 77 [K] larger than the energy gap T77K at 77 [K] of the second compound. The second compound has a fused ring structure represented by a formula (2) below and has eight or less rings in total.

Abstract: A cross-conjugated polymer having a hole transporting property and a solubility suitable for forming a film by coating, a material including the polymer for electronic device and organic electroluminescence device, a solution including the polymer, and an organic electroluminescence device are described. The organic electroluminescence device contains a cathode, an anode, and at least one organic thin film layer disposed between the cathode and the anode and contains a light emitting layer. At least one of the at least one organic thin film layer is a hole injecting layer or a hole transporting layer, and at least one of the hole injecting layer and the hole transporting layer contains the cross-conjugated polymer having a structural unit (A) for forming a cross-conjugation system as a repeating unit and a substituent X containing at least one of an arylamine portion, a carbazole portion, and an indole portion as a side chain.

Abstract: An organic electroluminescence device includes an anode, an emitting layer and a cathode, in which the emitting layer includes a first compound and a second compound, the first compound is a delayed fluorescent compound, the second compound is a fluorescent compound, an emission quantum efficiency of the first compound is 70% or less, and an ionization potential Ip1 of the first compound and an ionization potential Ip2 of the second compound satisfy a relationship of 0?Ip2?Ip1?0.8 eV.

Abstract: An organic electroluminescence device includes an anode, an emitting layer, and a cathode, the emitting layer including a delayed-fluorescent first compound represented by a formula (1), and a fluorescent second compound. In the formula (1), Ar1 is a substituted or unsubstituted aryl group having 6 to 30 ring carbon atoms and the like, and ArEWG is a substituted or unsubstituted heteroaryl group having 5 to 30 ring atoms and including one or more nitrogen atom in the ring, or an aryl group having 6 to 30 ring carbon atoms and substituted by one or more cyano group, at least one of Ar1 and ArX being at least one group selected from the group consisting of groups represented by a formula (1a) and the like.

Abstract: Disclosed herein is an organic EL light-emitting apparatus including a plurality of pixels including a first pixel and a second pixel. The first pixel and second pixel share a common layer. The pixel other than the second pixel includes a non-common layer. The common layer contains a delayed fluorescent compound. The second pixel is configured to emit a light from the common layer. The pixel other than the second pixel is configured to emit a light from the non-common layer.

Abstract: An organic electroluminescence device includes an anode, an emitting layer, an electron-transporting region, and a cathode, the anode, the emitting layer, the electron-transporting region, and the cathode being stacked in this order, the emitting layer including a host material, and a dopant material that emits fluorescence having a main peak wavelength of 550 nm or less, the electron-transporting region including a barrier layer that is adjacent to the emitting layer, and the barrier layer including a barrier material that includes an electron-transporting structural part, and a triplet barrier structural part that includes a fused polycyclic aromatic hydrocarbon compound, and satisfies the relationship “ETb>ETh” (where, ETh is the triplet energy of the host material, and ETb is the triplet energy of the barrier material).