Organic electroluminescence device and electronic apparatus
AssigneeIdemitsu Kosan Co., Ltd.
InventorsTasuku Haketa, Kazuki Nishimura
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Abstract
An organic electroluminescence device comprising: a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein the organic layer comprises an emitting layer and a first layer, the first layer is disposed between the anode and the emitting layer, the emitting layer comprises a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm, and the first layer comprises a first hole-transporting material and a second hole-transporting material.
Claims18
An organic electroluminescence device comprising:
- a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein
- the organic layer comprises an emitting layer and a first layer,
- the first layer is disposed between the anode and the emitting layer,
- the emitting layer comprises a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm, and
- the first layer comprises a first hole-transporting material and a second hole-transporting material, wherein each of the first hole-transporting material and the second hole-transporting material is a compound represented by the following formula (11-1B):
- wherein in the formula (11-1B),
- L11B to L13B are independently
- a single bond, or
- a substituted or unsubstituted arylene group including 6 to 50 ring carbon atoms;
- Ar11B to Ar13B are independently
- a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
- a substituted or unsubstituted monovalent heterocyclic group including 5 to 60 ring atoms;
- the substituents when L11B to L13B, and Ar11B to Ar13B have substituents are independently
- a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
- a substituted or unsubstituted alkenyl group including 2 to 50 carbon atoms,
- a substituted or unsubstituted alkynyl group including 2 to 50 carbon atoms,
- a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
- —Si(R901)(R902)(R903),
- —O—(R904),
- —S—(R905),
- a halogen atom, a cyano group, a nitro group,
- a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
- a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
- R901 to R905 are independently
- a hydrogen atom,
- a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
- a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
- a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
- a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
- and when two or more of each of R901 to R905 are present, the two or more of each of R901 to R905 may be the same as or different to each other, wherein
- at least one of the first material and the second material satisfies each of the following three conditions (i)-(iii):
- (i) each of L11B to L13B is a single bond;
- (ii) one of Ar11B to Ar13B is an unsubstituted aryl group including 6 to 50 ring carbon atoms;
- and
- (iii) two of Ar11B to Ar13B are independently an unsubstituted monovalent heterocyclic group including 5 to 60 ring atoms.
An organic electroluminescence device comprising:
- a cathode, an anode, and an organic layer disposed between the cathode and the anode, wherein
- the organic layer comprises an emitting layer and a first layer,
- the first layer is disposed between the anode and the emitting layer,
- the emitting layer comprises a compound A having a Stokes shift of 20 nm or smaller and an emission peak wavelength of 440 nm to 465 nm, and
- the first layer comprises a first hole-transporting material and a second hole-transporting material, wherein each of the first hole-transporting material and the second hole-transporting material is a compound represented by the following formula (11-1B):
- wherein in the formula (11-1B),
- L11B to L13B are independently
- a single bond, or
- a substituted or unsubstituted arylene group including 6 to 50 ring carbon atoms;
- Ar11B to Ar13B are independently
- a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
- a substituted or unsubstituted monovalent heterocyclic group including 5 to 60 ring atoms;
- the substituents when L11B to L13B, and Ar11B to Ar13B have substituents are independently
- a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
- a substituted or unsubstituted alkenyl group including 2 to 50 carbon atoms,
- a substituted or unsubstituted alkynyl group including 2 to 50 carbon atoms,
- a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
- —Si(R901)(R902)(R903),
- —O—(R904),
- —S—(R905),
- a halogen atom, a cyano group, a nitro group,
- a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
- a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
- R901 to R905 are independently
- a hydrogen atom,
- a substituted or unsubstituted alkyl group including 1 to 50 carbon atoms,
- a substituted or unsubstituted cycloalkyl group including 3 to 50 ring carbon atoms,
- a substituted or unsubstituted aryl group including 6 to 50 ring carbon atoms, or
- a substituted or unsubstituted monovalent heterocyclic group including 5 to 50 ring atoms;
- and when two or more of each of R901 to R905 are present, the two or more of each of R901 to R905 may be the same as or different to each other, wherein
- in at least one of the first material and the second material, at least one of Ar11B to Ar13B is a substituted or unsubstituted carbazolyl group.
Dependencies are inferred from the claim text.