US 2011/0253991 A1 · ORGANIC ELECTROLUMINESCENCE DEVICE

Abstract

[Problem to be Solved] To provide an organic electroluminescence device with heat resistance capable of being driven by a low voltage. [Solution] An organic electroluminescence device includes a pair of anode and cathode opposed to each other; and a plurality of organic semiconductor layers layered or disposed between the anode and the cathode, the organic semiconductor layers including a light-emitting layer. At least one of the organic semiconductor layers contains a bulky organic semiconductor compound having an aromatic multi-membered ring structure and at least three aromatic substituents bonded thereto. Each of the aromatic substituents is arranged in a manner that a dihedral angle between a ring plane of the aromatic multi-membered ring structure and the ring plane of the aromatic substituent is within 70 to 90° determined by a semiempirical molecular orbital calculation method.

Claims15

Dependent claims

An organic electroluminescence device comprising:

a pair of anode and cathode opposed to each other;
and
a plurality of organic semiconductor layers layered and disposed between the anode and the cathode, the organic semiconductor layers including an light-emitting layer,
wherein the organic semiconductor layers includes a hole injection layer and an hole transport layer layered from the anode side between the light-emitting layer and the anode,
wherein the hole injection layer comprises a borazine compound represented by a general chemical formula (1) below,
wherein N denotes a nitrogen atom;
B denotes a boron atom;
R denotes a hydrogen atom, an aryl group, a heteroaryl group, an oligoaryl group or an oligoheteroaryl group;
R may be different or same and at least three of R or more are not hydrogen atoms,
wherein, the hole injection layer or a neighboring layer thereof on the anode side contains an inorganic fluoride or inorganic oxide,
wherein, the hole transport layer comprises an arylamine compound.

8 more elements

Dependencies are inferred from the claim text.

Organic electroluminescence device

Life of this patent

Organic electroluminescence device

Life of this patent

Abstract

Claims15