Organic electroluminescent device
AssigneeIdemitsu Kosan Co., Ltd.
InventorsHisahiro Higashi, Chishio Hosokawa
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Abstract
The invention provides an organic EL device which produces high luminance and is durable and which can be fabricated with ease. The organic EL device comprises two electrodes and a light-emitting layer sandwiched therebetween, in which the light-emitting layer contains a molecular compound having an electron-transporting unit and a hole-transporting unit bonded to each other via a linking group.
Claims25
An organic electroluminescent device comprising two electrodes and a light-emitting layer sandwiched therebetween, wherein;
- the light-emitting layer has a single-layered structure and comprises:
- a molecular compound having an electron-transporting unit and a hole-transporting unit bonded to each other via a linking group;
- and
- a recombination site-forming substance;
- wherein said molecular compound is at least one of the following formulae (1) to (14):
- wherein in formula (4), R1, R2, R3, and R4 may be be the same or different and each represents an alkyl group having from 1 to 10 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkyl-substituted aryl group having from 6 to 20 carbon atoms, or an aryloxyaryl group having from 12 to 30 carbon atoms.
An organic electroluminescent device comprising two electrodes and a light-emitting layer sandwiched therebetween, wherein;
- the light-emitting layer has a single-layered structure and comprises:
- a molecular compound having an electron-transporting unit and a hole-transporting unit bonded to each other directly or via a linking group;
- and
- a recombination site-forming substance;
- wherein said molecular compound is at least one of the following formulae (1) to (14):
- wherein in formula (4), R1, R2, R3, and R4 may be be the same or different and each represents an alkyl group having from 1 to 10 carbon atoms, an aryl group having from 6 to 20 carbon atoms, an alkyl-substituted aryl group having from 6 to 20 carbon atoms, or an aryloxyaryl group having from 12 to 30 carbon atoms.
An organic electroluminescent device comprising two electrodes and a light-emitting layer sandwiched therebetween, wherein;
- the light-emitting layer has a single-layered structure and comprises a molecular compound;
- wherein said molecular compound is at least one of the following formulae (4), (6), (7), (10), (11) and (13):
Dependencies are inferred from the claim text.