摘要:
An organic electroluminescence device (1) includes: an anode (3); a cathode (4); and an emitting layer (5) provided between the anode (3) and the cathode (4). The emitting layer contains a first host, a second host and a phosphorescent dopant. A triplet energy of each of the first host and the second host is 2.8 eV or more. An ionization potential of the first host is 5.5 eV or less. An affinity Af1 of the first host is smaller than an affinity Af2 of the second host.
摘要:
An organic electroluminescence device (1) includes: an anode (3); a cathode (4); and an emitting layer (5) provided between the anode (3) and the cathode (4). The emitting layer contains a first host, a second host and a phosphorescent dopant. A triplet energy of each of the first host and the second host is 2.8 eV or more. An ionization potential of the first host is 5.5 eV or less. An affinity Af1 of the first host is smaller than an affinity Af2 of the second host.
摘要:
The present invention provides a material for an organic electroluminescence device having a specific structure in which a dibennzofuranyl group or a dibenzothiophenyl group is bonded at an N-position (9-position) of a carbazolyl group and an organic electroluminescence device which is provided with one or more organic thin film layers including a light emitting layer between a cathode and an anode and in which at least one layer of the organic thin film layers described above contains the material for an organic electroluminescence device according to the present invention.
摘要:
Provided is a material for an organic electroluminescence device, which further has a bulky carbazolyl group at each of the 3-position and 6-position of its central carbazole skeleton, and which has a dibenzofuran skeleton or a dibenzothiophene skeleton at the N atom of the central carbazole skeleton through a linking group as required. Also provided is an organic electroluminescence device, including one or more organic thin film layers including a light emitting layer between a cathode and an anode, in which at least one layer of the organic thin film layers contains the material for an organic electroluminescence device.
摘要:
A nitrogen-containing aromatic heterocyclic derivative represented by the following formula, wherein X1 to X3 are a single bond, CRaRb, NRc, an oxygen atom or a sulfur atom, and when all of X1 to X3 is a single bond, at least one of Ara, Arb and Arc is an aryl group having 6 to 20 ring carbon atoms substituted with a heteroaryl group, an aryloxy group or a heteroaryloxy group, or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.
摘要:
A specific material for organic electroluminescence device having m-phenylene skeleton in its molecule realizes a highly heat-resistant and long lifetime organic electroluminescence device capable of driving at low voltage with high efficiency.
摘要:
An organic electroluminescence device, including: an anode; a cathode opposed to the anode; and a first emitting layer and a second emitting layer between the anode and the cathode in this sequence from the anode, wherein: the first emitting layer and the second emitting layer each include a host and a phosphorescent dopant; the host of the first emitting layer and the host of the second emitting layer each have a triplet energy of 2.8 eV or more; the host of the first emitting layer has an ionization potential of 5.5 eV or less; and an affinity Af1 of the host of the first emitting layer is smaller than an affinity Af2 of the host of the second emitting layer.
摘要:
A nitrogen-containing aromatic heterocyclic derivative represented by the following formula, wherein X1 to X3 are a single bond, CRaRb, NRc, an oxygen atom or a sulfur atom, and when all of X1 to X3 is a single bond, at least one of Ara, Arb and Arc is an aryl group having 6 to 20 ring carbon atoms substituted with a heteroaryl group, an aryloxy group or a heteroaryloxy group, or a substituted or unsubstituted heteroaryl group having 5 to 20 ring atoms.
摘要:
A specific material for organic electroluminescence device having m-phenylene skeleton in its molecule realizes a highly heat-resistant and long lifetime organic electroluminescence device capable of driving at low voltage with high efficiency.
摘要:
Provided is a material for an organic electroluminescence device having a specific structure in which a dibenzothiophenyl group or a carbazolyl group is bonded to a carbazolyl group at its N-position (9-position) directly or through a linking group. Further provided is an organic electroluminescence device including one or more organic thin film layers including a light emitting layer between a cathode and an anode, in which at least one organic thin film layer contains the material for an organic electroluminescence device of the present invention.