Organic electroluminescent element

Details Organic electroluminescent element Organic electroluminescent element

1996-04-24

1998-08-11

Michl, Paul R.

Stock material or miscellaneous articles

Composite

Of inorganic material

428691, 428917, H05B 3314

Patent

active

057925682

ABSTRACT:
An organic electroluminescent element comprising a substrate are stacked layers thereon of, a positive electrode, a holeinjected carrier layer, a luminescent layer and a negative electrode and optionally an electron-injected carrier layer formed between the luminescent layer and the negative electrode, wherein the hole-injected carrier layer comprising a bis-enamine compound represented by the following formula (I): ##STR1## wherein R.sub.1 and R.sub.2 are, the same or different, a lower alkyl group or an optionally substituted aryl or heterocyclic group, or alternatively, R.sub.1 and R.sub.2 together with the carbon atom to which they are bonded may form a benzocycloalkyl group, the benzene ring being optionally substituted by a substituent or substituents selected from the group consisting of a halogen atom, a lower alkyl group and a lower alkoxy group; R.sub.3 is an optionally substituted aryl or heterocyclic group; and Ar is a methylene group, a vinylene group or an optionally substituted C.sub.6-20 arylene or heterocyclediyl group.

REFERENCES:
patent: 5281489 (1994-01-01), Mori
patent: 5389479 (1995-02-01), Morimoto
patent: 5554450 (1996-09-01), Shi
Tang & Van Syke, "Organic Electroluminescent Diodes," Appl. Phys. Lett. 51 (12), pp. 913-915 (21 Sep. 1987).
Nippon Gakujutu Shinkokai, Photoelectric Mutual Convention Committee No. 125, 11th El. Subcommittee materials, pp. 19-24 (29 May 1994).
The 39th Joint Lecture Meeting related to Applied Physics, 28p-Q-9.

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