Eastman-kodak Company

Steven A VanSlyke

Ching W Tang

Michael L Boroson

Philip S Bryan

Henry J Gysling

Chin H Chen

Christopher P Moore

Luther C Roberts

Frank V Lovecchio

Michael E O'Brien

Aneglo G Pignata

An in-situ vacuum method for fabricating, at least in part, an OLED device that is moisture- or oxygen-sensitive, such method including providing into a vacuum coater a receiver element which will form part of the OLED device; providing into said vacuum coater a donor support element and coating such donor support element to produce a donor element with one or more layers required to produce all or part of the OLED device; positioning the coated side of the donor element in material transferring relinquish to the receiver element to be coated; and applying radiation to the d nor element to selectively transfer in vacuum one or more layers from the donor element to the receiver element.

In situ vacuum method for making OLED devices

The invention comprises a novel composition containing, and an organic electroluminescent device employing, an aluminum chelate of the formula:

Internal junction organic electroluminescent device with a novel

An internal junction organic electroluminescent device is disclosed comprised of, in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode. The organic electron injecting and transporting zone is comprised of an electron injecting layer in contact with the cathode and, interposed between the electron injecting layer and the organic hole injecting and transporting zone, a blue emitting luminescent layer comprised of a bis(R.sup.s -8-quinolinolato) aluminum(III)-.mu.-oxo-bis(R.sup.s -8-quinolinolato)- aluminum(III), where R.sup.s substituents are chosen to block the attachment of more than two substituted 8-quinolinolato ring nuclei to any one aluminum atom. Increased operating stability and device emission at even shorter blue wavelengths can be realized by the incorporation of a pentacarbocyclic aromatic fluorescent dye.

Blue emitting internal junction organic electroluminescent device (I)

A blue-emitting luminescent composition is disclosed comprised of an aluminum chelate containing a phenolato ligand and two R.sup.s -8-quinolinolato ligands, where R.sup.s substituents are chosen to block the attachment of more than two substituted 8-quinolinolato ligands to the aluminum atom. The presence of the phenolato ligand shifts emission to the blue region of the spectrum. Emission can be shifted to even shorter blue wavelengths by the incorporation of a pentacarbocyclic aromatic fluorescent dye.

Mixed ligand 8-quinolinolato aluminum chelate luminophors

An internal junction organic electroluminescent device is disclosed comprising in sequence, an anode, an organic hold injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode. The hole injecting and transporting zone includes a tertiary amine containing at least two tertiary amine moieties and including attached to a tertiary amine nitrogen atom an aromatic moiety containing at least two fused aromatic rings.

Electroluminescent device with organic electroluminescent medium

An internal junction electroluminescent device is disclosed containing, in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone forming a junction with the organic hole injecting and transporting zone, and a cathode comprised of a layer contacting the organic electron injecting and transporting zone containing a combination of magnesium and aluminum. Aluminum accounts for at least 80 percent of the cathode layer.

Electroluminescent device with improved cathode

An organic electroluminescent device is disclosed which is protected from dark spot formation. The device is comprised of, in sequence, a support, an anode, an organic electroluminescent medium, and a cathode. The cathode contains a plurality of metals, at least one of which is a low work function metal other than an alkali metal. Overlying the cathode is a protective layer comprised of a mixture of at least one organic component of the organic electroluminescent medium and at least one metal having a work function in the range of from 4.0 to 4.5 eV capable of being oxidized in the presence of ambient moisture.

Organic electroluminescent device with stabilized cathode

An electroluminescent device is disclosed comprised of, in sequence, an anode, an organic hole transporting zone, an organic electron transporting zone, and a cathode. The cathode is comprised of a layer of a plurality of metals other than alkali metals, at least one of said metals having a work function of less than 4 eV.

An electroluminescent device is disclosed comprising in sequence, an anode, an organic hole injecting and transporting zone, an organic electron injecting and transporting zone, and a cathode. The organic hole injecting and transporting zone is comprised of a layer in contact with the anode containing a hole injecting porphyrinic compound and a layer containing a hole transporting aromatic tertiary amine interposed between the hole injecting layer and the electron injecting and transporting zone.

Electroluminescent device with organic luminescent medium

Electroluminescent devices are disclosed comprising a hole-injecting zone and an adjacent organic luminescent zone, the device having a power conversion efficiency of at least 9.times.10.sup.-5 w/w and said zones having a combined thickness no greater than about 1 micron.

Growing community of inventors

Rochester, NY, United States of America

Steven A VanSlyke