Organic electroluminescence element
OwnerMasayuki HAYASHIinventor
Life of this patent
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Abstract
An organic electroluminescence element including: an anode, a cathode, and at least one organic layer which includes a light emitting layer, and which is provided between the anode and the cathode, wherein at least one layer in the organic layer contains at least one selected from nitrogen-containing heterocyclic derivatives each represented by the following General Formula (1) and used as at least one of an electron injecting material and an electron transporting material, and at least one layer in the organic layer contains at least one selected from phosphorescence emitting materials having structures expressed by the following Structural Formulae (I-1) to (I-4), (I-7) to (I-12), (I-14) and (I-16) to (I-26):
Claims5
An organic electroluminescence element comprising:
- an anode,
- a cathode, and
- at least one organic layer which comprises a light emitting layer, and which is provided between the anode and the cathode,
- wherein at least one layer in the organic layer contains at least one selected from nitrogen-containing heterocyclic derivatives each represented by the following General Formula (1) and used as at least one of an electron injecting material and an electron transporting material, and at least one layer in the organic layer contains at least one selected from phosphorescence emitting materials having structures expressed by the following Structural Formulae (I-1) to (I-4), (I-7) to (I-12), (I-14) and (I-16) to (I-26):
- where A1 to A3 independently represent a nitrogen atom or a carbon atom;
- Ar1 represents a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms or a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms;
- Ar2 represents any one of a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms and a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms, provided that one of Ar1 and Ar2 is a substituted or unsubstituted condensed ring group having 10 to 60 nuclear carbon atoms or a substituted or unsubstituted monohetero-condensed ring group having 3 to 60 nuclear carbon atoms;
- L1 and L2 independently represent any one of a single bond, a substituted or unsubstituted arylene group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroarylene group having 3 to 60 nuclear carbon atoms and a substituted or unsubstituted fluorenylene group;
- R represents any one of a hydrogen atom, a substituted or unsubstituted aryl group having 6 to 60 nuclear carbon atoms, a substituted or unsubstituted heteroaryl group having 3 to 60 nuclear carbon atoms, a substituted or unsubstituted alkyl group having 1 to 20 carbon atoms and a substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms;
- n is an integer of 0 to 5, and when n is 2 or more, Rs may be identical to or different from each other, and adjacent R groups may be bonded to each other to form a carbon cyclic aliphatic ring or a carbon cyclic aromatic ring,
Dependencies are inferred from the claim text.