Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.

Abstract: Provided is an organic electroluminescent element comprising a substrate having thereon an anode, a cathode, and a plurality of organic layers sandwiched between the anode and the cathode, wherein the plurality of organic layers comprise: a light emitting layer containing a phosphorescence emitting compound; and an electron transport layer containing a compound represented by Formula (1), (Ar1)n1?Y1??Formula (1) wherein n1 is an integer of 1 or more; Y1 is a substituent when n1 is 1, and Y1 is a single bond or a linking group of n1 valences when n1 is two or more; Ar1 is a group represented by Formula (A), a plurality of Ar1 may be the same or different with each other when n1 is two or more; and the compound represented by Formula (1) contains at least two condensed aromatic heterocyclic rings each comprising 3 or more rings condensed with each other:

Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.

Abstract: An organic electroluminescent element includes a hole injection layer (HI), a first hole transport layer (HT1), a second hole transport layer (HT2), and a light-emitting layer containing a host compound (H) and a phosphorescence emitting dopant compound (D), which are laminated in this order, between and an anode and a cathode. The phosphorescence emitting dopant compound has a partial structure represented by Formula (1): The “highest occupied molecular orbital” HOMO of the second hole transport layer satisfies the expression: ?5.4<HOMO (HT2)<?4.8; and the relationship of triplet excitation energies (T1) between the phosphorescence emitting dopant compound and a hole transport material contained in the second hole transport layer satisfies the expression: T1(HT2)?T1(D)>0.1.

Abstract: An organic electroluminescent element containing an anode and a cathode having therebetween a light emitting layer, wherein the light emitting layer contains a guest compound having a substructure represented by Formula (AA): wherein A represents a group of atoms necessary to form an aromatic hydrocarbon ring or an aromatic heterocycle, B represents a group of atoms necessary to form a 5-membered aromatic heterocycle containing nitrogen or a 5-membered heterocycle containing nitrogen and M represents Ir or Pt, and a host compound represented by Formula (1):

Abstract: Provided is an organic electroluminescent element comprising a substrate having thereon an anode, a cathode, and a plurality of organic layers sandwiched between the anode and the cathode, wherein the plurality of organic layers comprise: a light emitting layer containing a phosphorescence emitting compound; and an electron transport layer containing a compound represented by Formula (1), (Ar1)n1-Y1??Formula (1) wherein n1 is an integer of 1 or more; Y1 is a substituent when n1 is 1, and Y1 is a single bond or a linking group of n1 valences when n1 is two or more; Ar1 is a group represented by Formula (A), a plurality of Ar1 may be the same or different with each other when n1 is two or more; and the compound represented by Formula (1) contains at least two condensed aromatic heterocyclic rings each comprising 3 or more rings condensed with each other.

Abstract: Disclosed is an organic electroluminescent (EL) device having high emission luminance and high emission efficiency. Particularly disclosed are a blue-light emitting organic EL device, which is high in emission luminance, color purity, emission efficiency and durability, a display and an illuminating device each employing the organic EL device. The organic El device is characterized in that it comprises a light emission layer containing two or more kinds of host compounds and at least one dopant, wherein at least one of the two or more kinds of host compounds has an excited triplet energy of not less than 2.7 eV, and the dopant is a phosphorescent compound.

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 organic electroluminescence element comprising at least an emission layer sandwiched between an anode and a cathode, wherein the emission layer comprises a metal complex having a partial structure represented by Formula (1):

Abstract: An organic electroluminescent element containing an anode and a cathode having therebetween a light emitting layer, wherein the light emitting layer contains a guest compound having a substructure represented by the following Formula (A): wherein Ra represents alkyl, alkenyl, alkynyl, cycloalkyl, aromatic hydrocarbon, aromatic heterocyclic or heterocyclic, Rb and Rc represent hydrogen or a substituent, A1 represents a group of atoms which forms an aromatic hydrocarbon ring or an aromatic heterocycle, M represents Ir or Pt, and a host compound having the following Formula (1): wherein Ra1 represents alkyl, alkenyl, alkynyl, cycloalkyl or heterocyclic, R1, R2 and R5 each represent hydrogen or a substituent, and n1, n2 and n5 each represent 0 to 4.

Abstract: Provided is a method for producing a nitrogen-containing condensed heterocyclic compound containing the step of: reacting a compound represented by Formula (1a) or Formula (1b) with a compound represented by Formula (2) under existence of cupper or a cupper ion, and a ligand to produce a nitrogen-containing condensed heterocyclic compound represented by Formula (3a) or Formula (3b):

Abstract: This invention provides an organic EL element, which can control luminescence wavelength, exhibits high luminescence efficiency, and has a prolonged emission life, and a lighting equipment and a display device. They can be realized by an organic electroluminescent element material characterized by a metal complex having a structure represented by the following general formula (A) as a partial structure.

Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.

Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.

Abstract: Disclosed is an organic electroluminescence element comprising an anode, a cathode and a plurality of organic compound layers between the anode and the cathode, provided that one of the organic compound layers is a light emitting layer containing a phosphorescence emitting compound, wherein at least one of the organic compound layers contains a compound represented by Formula (2): wherein, X represents O or S; three of Y1 to Y4 each are a group represented by Formula (2A), and one of Y1 to Y4 is a hydrogen atom. Formula (2A) is: Ar1L1n1* wherein, L1 represents a divalent linking group derived from an aromatic hydrocarbon ring or an aromatic heterocycle; n1 represents an integer of 0 to 3, provided that when n1 is 2 or 3, a plurality of L1s may be the same or different; “*” indicates a linking position with Formula (2).

Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.

Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.

Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.

Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.

Abstract: Disclosed is an organic electroluminescent device having long life, while exhibiting high luminous efficiency. Also disclosed are an illuminating device and a display, each using such an organic electroluminescent device. In the organic electroluminescent device, a compound represented by the general formula (A) which is suitable as a host material for a phosphorescent metal complex is used at least in one sublayer of a light-emitting layer.