Eastman-kodak Company

Global Oled Technology LLC

Manju Rajeswaran

William J Begley

Natasha Andrievsky

Tukaram K Hatwar

Thomas N Blanton

David J Giesen

Deepak Shukla

Ching W Tang

Joseph F Bringley

Thomas R Welter

Margaret Jones Helber

Liang-Sheng Liao

Kevin P Klubek

Wendy G Ahearn

Christopher T Brown

Peter G Bessey

Hans F Schmitthenner

Joseph Lawrence Lippert

Jeffrey T Carey

Michael R Landry

Barbara Stwertka

William F Nichols

William James Begley

Tukaram Kisan Hatwar

Jeffrey Todd Carey

Thomas Robert Welter

An OLED device including a cathode, a light emitting layer and an anode, in that order, and, having located between the cathode and the light emitting layer, a further layer containing an alkali metal or alkaline earth metal salt of a 2-(2-hydroxyphenyl)phenanthroline derivative, according to Formula (MC) below. Such devices exhibit reduced drive voltage while maintaining good luminance. 

Organic element for low voltage electroluminescent devices

The invention provides an OLED device containing certain alkali metal cluster compounds with mixed ligands, such compounds, and methods of making them. In particular, the cluster compound is a neutrally charged mixed cluster compound comprising first and second subunits with the first subunit comprising an alkali metal salt of a nitrogen containing a heterocyclic ligand bearing a anionic hydroxy group and the second subunit consisting of an organic alkali metal salt different than the first subunit.

OLED device employing alkali metal cluster compounds

A thin film transistor comprises a layer of organic semiconductor material comprising a configurationally controlled N,N'-dicycloalkyl-substituted naphthalene-1,4,5,8-bis-carboximide compound having a substituted or unsubstituted alicyclic ring independently attached to each imide nitrogen atom with the proviso that at least one of the two alicyclic rings is necessarily a 4-substituted cyclohexyl ring in which a substituent at the 4-position is the sole substituent on the 4-substituted cyclohexyl ring other than the imide attachment; with such substituent being stereochemically disposed as only one of either an essentially trans or cis position, respectively, to the imide nitrogen substituent. Such transistors can further comprise spaced apart first and second contact means or electrodes in contact with said material. Further disclosed is a process for fabricating an organic thin-film transistor device, preferably by sublimation deposition onto a substrate, wherein the substrate temperature is no more than 100&#xb0; C.

Configurationally controlled N,N'-Dicycloalkyl-substituted naphthalene-based tetracarboxylic diimide compounds as N-type semiconductor materials for thin film transistors

An OLED device comprises a cathode, a light emitting layer and an anode, in that order, and, having located between the cathode and the light emitting layer, a further layer containing; wherein:

An organic light-emitting diode (OLED) device produces white light, includes a) an anode; b) a hole-transporting layer disposed over the anode; c) a blue light-emitting layer disposed over the hole-transporting layer; d) an electron-transporting layer disposed over the blue light-emitting layer; e) a cathode disposed over the electron-transporting layer; wherein the hole-transporting layer comprises an entire layer or a partial portion of a layer in contact with the blue light-emitting layer and contains a light-emitting naphthacene compound having a specified formula.

White organic light-emitting devices with improved performance

A process for characterizing the phase of an organic material in a thin film comprises employing a reference spectrum library for potential phases, subjecting the film to a vibrational spectroscopy measurement to obtain a resulting spectrum; and comparing the resulting spectrum to those in the reference library to characterize the phase of the organic material.

Characterizing organic materials in a thin film

A process for synthesizing a single isomer of a naphthacene compound comprises the steps of:

Process of maing naphthacene from propargyl alcohol

A process for improving the stability to photo-oxidation of a polycyclic aromatic compound having at least two polymorphic forms comprises treating a first polymorph with one or more solvents to obtain the more stable second polymorph and then separating the second polymorph from the solvent.

Process for photo-oxidative stability improvements

An OLED device comprises a light-emitting layer containing a hydrocarbon host material and a light-emitting material of Formula (1): wherein:

Electroluminescent device containing borondiketonate emitter

Process of making naphthacene from a propargyl alcohol

A process for synthesizing a naphthacene compound comprises the steps of:

Process of making naphthacene from propargyl alcohol

A process for forming the facial isomer of an aluminum trisquinoline complex comprises heating the solid aluminum trisquinoline complex material at a temperature at least 50&#xb0; C. below the melting point temperature of the solid for a time sufficient to convert the aluminum trisquinoline complex to at least 99 mol % of one polymorph of the facial-isomer that fluoresces with a maximum intensity below 510 nm.

Process for preparing aluminum trisquinoline complex

An electroluminescent device comprising a host material and a rubrene derivative having a naphthacene nucleus comprising four fused phenyl rings a, b, c, and d, in order, containing two secondary phenyl ring groups linked to the 'c' ring, each bearing directly or indirectly a fluoro or perfluoroalkyl group, wherein each fluoro or perfluoroalkyl group is either:

Organic element for electroluminescent devices

A process for forming a film of the facial-isomer of an aluminum trisquinoline complex comprises depositing a film of an aluminum trisquinoline complex on a support, depositing an inert barrier layer over the layer of aluminum trisquinoline complex that encapsulates aluminum trisquinoline complex to form a multilayer composite, and then heating the composite at a temperature below the melting point temperature of the complex for a time sufficient to convert the aluminum trisquinoline complex to at least 99 mol % of the facial-isomer that fluoresces with a maximum emission intensity below 510 nm. The product has a blue hue.

Process for forming a composite including an aluminum trisquinoline complex

Disclosed is an OLED device comprising a light-emitting layer (LEL) containing a host and an emitting dopant located between a cathode and an anode wherein the dopant is a naphthacene derivative represented by formula (I): wherein:

Growing community of inventors

Fairport, NY, United States of America

Manju Rajeswaran