White light emitting internal junction organic electroluminescen

Details White light emitting internal junction organic electroluminescen White light emitting internal junction organic electroluminescen

1993-09-13

1995-04-11

Nold, Charles R.

Stock material or miscellaneous articles

Composite

Of inorganic material

428917, 313504, 313501, 313506, H05B 3314

Patent

active

054057094

ABSTRACT:
An internal junction organic electroluminescent device comprises, in sequence, an anode, an organic electroluminescent medium, and a cathode, the organic electroluminescent medium further comprising a hole injecting and transporting zone contiguous with the anode and an electron injecting and transporting zone contiguous with the cathode, the electron injecting and transporting zone further comprising an electron injecting layer in contact with the cathode, characterized in that the portion of the organic electroluminescent medium that is interposed between the electron injecting layer and the hole injecting and transporting zone is capable of emitting white light in response to hole-electron recombination and comprises a fluorescent material and a mixed ligand aluminum chelate of the formula

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Kushi et al., "The Crystal and Molecular Structure of Bis(2-methyl-8-quinolinolato) aluminum (III)-.mu.-oxo-bis(2-methyl-8-quinolinolato) aluminum (III)", J. Amer. Chem. Soc., 92(1), pp. 91-96 (1970).
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