Abstract: One objective of the present invention is to provide a coating liquid for forming a light emitting layer, which improves quantum efficiency. Another objective of the present invention is to provide: an organic electroluminescent element which is formed by means of this coating liquid for forming a light emitting layer; a lighting device, a display device and a white electroluminescent device, each of which is provided with this organic electroluminescent element; and a method for manufacturing an organic electroluminescent element. A coating liquid for forming a light emitting layer according to the present invention is used for the purpose of forming a light emitting layer, which is one of one or more organic layers held between a positive electrode and a negative electrode, and this coating liquid for forming a light emitting layer is characterized by containing a thermally activated delayed fluorescent compound.

Abstract: A wet process using an organic solvent is used to produce an organic EL element, which has high light emission efficiency, a long light emission life and a small color change when continuously driven, an illuminating device and a display device are provided. Especially, an organic EL element which emits white light and can be manufactured at low cost is provided.

Abstract: The organic electroluminescent element has a pair of electrodes and at least two organic functional layers including a light-emitting layer on a substrate. The light-emitting layer contains a host compound and a phosphorescent dopant. The light-emitting layer or the layer adjacent to the light-emitting layer contains quantum dots.

Abstract: Disclosed is an electroluminescence element, wherein at least a first electrode, a light-emitting layer, and a second electrode may be laminated on a substrate in said order. In said element, the light-emitting layer may contain quantum dots, and an intermediate layer formed from a polymer containing nitrogen atoms may be formed between the first electrode and the light-emitting layer.

Abstract: An object of the present invention is to provide an organic electroluminescent element that has low drive voltage, high emission efficiency, long endurance and an excellent effect of preventing generation of dark spots. Another object of the present invention is to provide a lighting device and a display device each including the organic electroluminescent element. The organic electroluminescent element according to the present invention includes an anode, a cathode, and an emissive layer, and the organic electroluminescent element includes a layer containing compound A that has a difference of 0 nm or more and 5 nm or less between the maximum emission wavelength on the shortest wavelength side in an emission spectrum measured at 300 K and the maximum emission wavelength on the shortest wavelength side in an emission spectrum measured at 77 K.

Abstract: An organic electroluminescent device containing: a six-coordinate, ortho-metalated iridium complex represented by the formula (I): wherein V represents a trivalent linking group and is bound to L1 to L3 through covalent bonds; each of L1 to L3 is represented by the formula (II) and R1 represents a substituted aryl group having seven or more carbon atoms.

Abstract: An organic electroluminescent element includes an organic layer including a compound having an electron donor moiety and an electron acceptor moiety in a single molecule. The compound satisfies the following expression: (?EH+?EL)?2.0 eV. ?EH represents a difference in energy level between a highest energy occupied molecular orbital spreading over the electron donor moiety and a highest energy occupied molecular orbital spreading over the electron acceptor moiety, and ?EL represents a difference in energy level between a lowest energy unoccupied molecular orbital spreading over the electron donor moiety and a lowest energy unoccupied molecular orbital spreading over the electron acceptor moiety, determined by molecular orbital calculation. A highest energy occupied molecular orbital of the compound has an energy level of ?5.2 eV or more. A lowest energy unoccupied molecular orbital of the compound has an energy level of ?1.2 eV or less.

Abstract: An organic electroluminescent element contains at least one organic layer that is interposed between an anode and a cathode. The organic layer includes a light emitting layer. The light emitting layer contains a light emitting compound that has a stokes shift within the range of 0-0.24 eV and a lowest excited singlet energy (S1) of 2.64 eV or more.

Abstract: Disclosed are: an organic EL material which emits light having a short wavelength and has high luminous efficiency and long light emission life; an organic EL element which contains the organic EL material; and a lighting device and a display device, each of which comprises the organic EL element.

Abstract: One objective of the present invention is to provide a coating liquid for forming a light emitting layer, which improves quantum efficiency. Another objective of the present invention is to provide: an organic electroluminescent element which is formed by means of this coating liquid for forming a light emitting layer; a lighting device, a display device and a white electroluminescent device, each of which is provided with this organic electroluminescent element; and a method for manufacturing an organic electroluminescent element. A coating liquid for forming a light emitting layer according to the present invention is used for the purpose of forming a light emitting layer, which is one of one or more organic layers held between a positive electrode and a negative electrode, and this coating liquid for forming a light emitting layer is characterized by containing a thermally activated delayed fluorescent compound.

Abstract: A wet process using an organic solvent is used to produce an organic EL element, which has high light emission efficiency, a long light emission life and a small color change when continuously driven, an illuminating device and a display device are provided. Especially, an organic EL element which emits white light and can be manufactured at low cost is provided.

Abstract: Disclosed is an electroluminescence element, wherein at least a first electrode, a light-emitting layer, and a second electrode may be laminated on a substrate in said order. In said element, the light-emitting layer may contain quantum dots, and an intermediate layer formed from a polymer containing nitrogen atoms may be formed between the first electrode and the light-emitting layer.

Abstract: The organic electroluminescent element has a pair of electrodes and at least two organic functional layers including a light-emitting layer on a substrate. The light-emitting layer contains a host compound and a phosphorescent dopant. The light-emitting layer or the layer adjacent to the light-emitting layer contains quantum dots.

Abstract: An organic electroluminescent element comprising a metal complex represented by Formula (1), wherein Z is a hydrocarbon ring or a heterocyclic ring, provided that each of the hydrocarbon ring and the heterocyclic ring has a substituent having a steric parameter (Es) of ?0.5 or less at the third atom of the ring counted from a nitrogen atom attached to Z, the nitrogen atom being counted as the first atom, X, Y, A, B, X1-L1-X2, M1, m1 and m2 are described in the specification.

Abstract: An object of the present invention is to provide an organic electroluminescent element that has low drive voltage, high emission efficiency, long endurance and an excellent effect of preventing generation of dark spots. Another object of the present invention is to provide a lighting device and a display device each including the organic electroluminescent element. The organic electroluminescent element according to the present invention includes an anode, a cathode, and an emissive layer, and the organic electroluminescent element includes a layer containing compound A that has a difference of 0 nm or more and 5 nm or less between the maximum emission wavelength on the shortest wavelength side in an emission spectrum measured at 300 K and the maximum emission wavelength on the shortest wavelength side in an emission spectrum measured at 77 K.

Abstract: Provided is a method for producing cyanoacetic acid in a hydrolysis reaction of a predetermined cyanoacetate in the presence of an acid catalyst. Further, are provided methods for producing a cyanoacetic acid derivative and a metal containing compound by using the produced cyanoacetic acid as a staring material. Herein, the method for producing cyanoacetic acid enables the content of a malonic acid byproduct generated in the hydrolysis reaction to be greatly lowered, allowing the produced cyanoacetic acid to be used as a starting material without any purification treatments. Those advantageous effects result in the great improvement in the purity and yields of the cyanoacetic acid derivative and the metal containing compound produced by said cyanoacetic acid. Accordingly, the above mentioned methods make it possible to produce cyanoacetic acid, the cyanoacetic acid derivative and the metal containing compound, as excellent in the productivity and economical efficiency.

Abstract: Disclosed are: an organic EL material which emits light having a short wavelength and has high luminous efficiency and long light emission life; an organic EL element which contains the organic EL material; and a lighting device and a display device, each of which comprises the organic EL element.

Abstract: An organic electroluminescent device containing: a six-coordinate, ortho-metalated iridium complex represented by the formula (I): wherein V represents a trivalent linking group and is bound to L1 to L3 through covalent bonds; each of L1 to L3 is represented by the formula (II); X5 and Ir form a coordinate bond; X7 and Ir form a covalent bond; each of X1 to X5 represents a group of elements composing a nitrogen-containing heterocycle, selected from carbon atom or nitrogen atom; at least one of X4 and X5 represents a nitrogen atom; each of X6 to X11 represents a group of element composing an aromatic five-membered ring or aromatic six-membered ring, and is selected from carbon atom or nitrogen atom; when X6 to X11 form an aromatic five-membered ring, X11 merely represents a bond; and R1 represents a substituted aryl group having seven or more carbon atoms.

Abstract: An organic EL element, which has high light emission efficiency, a long light emission life and a small color change when continuously driven, an illuminating device and a display device are provided. Especially, an organic EL element which emits white light and can be manufactured at low cost is provided.

Abstract: The present invention provides an organic electroluminescent element emitting a short wavelength light and having high emission efficiency and high storage stability, and a display and an illuminating device each employing the organic electroluminescent element.