Organic electroluminescent device

Details Organic electroluminescent device Organic electroluminescent device

1990-05-23

1992-04-14

Seidleck, James J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428917, 313503, 313504, A01J 6304

Patent

active

051047497

ABSTRACT:
An organic electroluminescent device having an organic hole injection transport layer and an organic luminescent layer formed between two conductive layers constituting electrodes, wherein the organic hole injection transfer layer contains a hydrazone compound of the following formula (I): ##STR1## wherein A is a monovalent or bivalent organic group containing at least one aromatic hydrocarbon ring or aromatic hetero ring which may have a substituent, each of R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is a hydrogen atom, or an alkyl, aralkyl, aromatic hydrocarbon or heterocyclic group which may have a substitutent, each of R.sup.6 and R.sup.7 is an alkyl, aralkyl, aryl, aromatic hydrocarbon or heterocyclic group which may have a substituent, l is an integer of 0 or 1, m is an integer of 0, 1 or 2, and n is an integer of 1 or 2, provided that A, R.sup.1 and the carbon atom to which R.sup.1 is bonded, or R.sup.6, R.sup.7 and the nitrogen atom to which R.sup.6 and R.sup.7 are bonded, may bond to one another to form a ring.

REFERENCES:
patent: 4356429 (1982-10-01), Tang
patent: 4539507 (1985-09-01), VanSlyke et al.
patent: 4672265 (1987-06-01), Eguchi et al.
patent: 4769292 (1988-09-01), Tang et al.
Tang et al., Appl. Phys. Lett. 51(12), 913-915 (21 Sep. 1987).
Tang et al., J. Appl. Phys. 65(9), 3610-3616 (1 May 1989).
Adachi et al., Japanese J. Appl. Phys. 27(4), L713-L715 (Apr. 1988).
Adachi et al., Japanese J. Appl. Phys. 27(2), L269-L271 (Feb. 1988).

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