Solvay USA Inc.

Plextronics, Inc.

Nissan Chemical Industries Limited

Other

Nissan Chemical Corporation

Christopher T Brown

Venkataramanan Seshadri

Jing Wang

Mathew Mathai

Brian Edward Woodworth

Elena E Sheina

Neetu Chopra

Christopher R Knittel

Chad A Landis

Edward S Yang

Christophe René Gaston Grenier

Ting Xu

Jessica Benson-Smith

Tukaram K Hatwar

William J Begley

Jeffrey P Spindler

Denis Y Kondakov

Marina E Kondakova

Atta Gueye

Samuel M Mazza

Mark A Bower

Venkataramanan Shesadri

Amanda Gavin

Victor Miranda

Mathew K Mathai

Seshadri Venkataramanan

Chad Landis

A composition comprising: at least one compound comprising a hole transporting core, wherein the core is covalently bonded to a first arylamine group and also covalently bonded to a second arylamine group different from the first, and wherein the compound is covalently bonded to at least one intractability group, wherein the intractability group is covalently bonded to the hole transporting core, the first arylamine group, the second arylamine group, or a combination thereof, and wherein the compound has a molecular weight of about 5,000 g/mole or less. Blended mixtures of arylamine compounds, including fluorene core compounds, can provide good film formation and stability when coated onto hole injection layers. Solution processing of OLEDs is a particularly important application.

Hole transport compositions and related devices and methods (I)

A composition comprising: at least one conjugated polymer, at least one second polymer comprising repeat units represented by: (I) optionally, &#x2014;[CH&#x2014;CH(Ph-OH)]&#x2014; and (II) &#x2014;[CH&#x2014;CH(Ph-OR)]&#x2014; wherein Ph is a phenyl ring and R comprises a fluorinated group, an alkyl group, an alkylsulfonic acid group, an alkylene oxide group, or a combination thereof is described. Other polymers can be used as second polymer including polymers comprising modified naphthol side groups. Used in hole injection and hole transport layers for organic electronic devices. Increased lifetime and better processability can be achieved. Versatility with useful OLED emitters can be achieved. Ink formulations can be adapted for ink jet printing. The conjugated polymer can be a polythiophene. Applications include OLEDs and OPVs.

Modified planarizing agents and devices

Use of certain materials in hole injection layer and/or hole transport layer can improve operational lifetimes in organic devices. Polymers having fused aromatic side groups such as polyvinylnaphthol polymers can be used in conjunction with conjugated polymers. Inks can be formulated and cast as films in organic electronic devices including OLEDs, SMOLEDs, and PLEDs. One embodiment provides a composition comprising: at least one conjugated polymer, and at least one second polymer different from the conjugated polymer comprising at least one optionally substituted fused aromatic hydrocarbon side group. The substituent can be hydroxyl. Aqueous-based inks can be formulated.

Planarizing agents and devices

An OLED device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL) comprising a phosphorescent emitting compound disposed in a host comprising a mixture of at least one electron transporting co-host which is a benzophenone derivative with a spiro substituent and at least one hole transporting co-host which is a triphenylamine which contains one trivalent nitrogen atom that is bonded only to carbon atoms, at least one of which is a member of an aromatic ring, wherein there is present an electron transporting layer contiguous to the LEL (HBL?) on the cathode side comprising an anthracene or a fluoranthene and wherein there is present an election injecting layer comprising a phenanthroline or a lithium quinolate contiguous to the cathode.

Electroluminescent devices including organic EIL layer

Improved OLED devices and methods of making the same using vertical phase separation to simplify processing. Vertically phase separated material can include at least one lower first layer disposed on the electrode, and at least one upper second layer different from the first layer and disposed away from the electrode or optionally on one layer comprising at least one semiconducting organic material. The first layer can be enriched with at least one first semiconducting organic material (SOM 1) and the second layer can be enriched with at least one second semiconducting organic material (SOM 2) different from the SOM 1. The ink composition can be adapted so that the film vertically phase separates into the first and second layers. Compositions and devices are also embodied herein.

Vertically phase-separating semiconducting organic material layers

High performance organic photovoltaic cells based on donor acceptor polymers in the active layer. A composition comprising: at least one copolymer comprising at least one first donor moiety and at least one first acceptor moiety in the copolymer backbone, wherein the first acceptor moiety comprises at least one first ring which is bivalently linked to the copolymer backbone and at least one second ring fused to the first ring and not bivalently linked to the copolymer backbone, wherein the first ring or the second ring comprises two adjacent fluoro ring substituents, and optionally, wherein the donor comprises at least one fused ring system. High efficiency, high Voc, and a combination of both can be achieved.

Fluoro monomers, oligomers, and polymers for inks and organic electronic devices

Compositions for use in hole transporting layers (HTLs) or hole injection layers (HILs) are provided, as well as methods of making the compositions and devices fabricated from the compositions. OLED devices can be made. The compositions comprise at least one conductive conjugated polymer, at least one semiconducting matrix component that is different from the conductive conjugated polymer, and an optional dopant, and are substantially free of an insulating matrix component.

Charge injection and transport layers

The composition described here comprises at least one hole-transporting compound, wherein the hole-transporting compound comprises a core covalently bonded to at least two arylamine groups, wherein the arylamine group optionally comprises one or more intractability groups. The composition can provide good film formation and stability when coated onto hole injection layers. Solution processing of hole transporting layers of OLEDs can be achieved with the composition described here. Good mobility can be achieved.

Hole transport materials including OLED applications

Polymers which can be used in p-type materials for organic electronic devices and photovoltaic cells. Compounds, monomers, dimers, trimers, and polymers comprising: Good photovoltaic efficiency and lifetime can be achieved. The R group can provide solubility, environmental stability, and fine tuning of spectroscopic and/or electronic properties. Different polymer microstructures can be prepared which encourage multiple band gaps and broad and strong absorptions. The carbonyl can interact with adjacent thiophene rings to provide backbone with rigidity, induce planarity, and reduce and/or eliminate intramolecular chain twisting defects. Polymers comprising benzodithiophene and/or benzothiadiazole structures can show particularly high performance.

Organic electronic devices and polymers, including photovoltaic cells and diketone-based polymers

Use of certain materials in hole injection or hole transport layers can improve the operational lifetimes in organic electronic devices. Compositions comprising a doped conjugated polymer, doped with a redox dopant, including iodonium salt, can increase lifetimes. Inks can be formulated and cast as films in organic electronic devices including OLEDs, PHOLEDs, and OPVs. One embodiment provides a composition with a conjugated polymer doped with a redox dopant. Non-aqueous based inks can be formulated. Iodonium salts can be used.

Doped conjugated polymers, devices, and methods of making devices

An improved polymerization method including a method comprising providing a reaction mixture comprising a first monomer, an organic oxidant, and at least one Lewis acid or Br&#xf6;nsted acid, wherein the first monomer comprises at least one optionally substituted heterocyclic ring, wherein the heterocyclic ring comprises at least one heteroatom; and reacting the reaction mixture to obtain a conjugated polymer. The method can reduce the content of undesirable entities in the polymer such as halogens and metals, which can be useful in organic electronic device applications. Purification methods also are adapted to remove organic and inorganic impurities.

Synthesis of conjugated polymers via oxidative polymerization and related compositions

Polymers comprising a backbone comprising at least one arylamine repeat moiety and at least one linking moiety, wherein the linking moiety does not comprise an aryl moiety. Ink formulations and organic electronic devices such as OLEDs or OPVs can be formed from the polymers and doped polymers. The polymers can be used in a hole injection layer, hole transport layer, a hole extraction layer, or as a host material in an emissive layer. Improved stability can be achieved in organic electronic devices such as OLEDs and OPVs.

Polyarylamine ketones

Hole transport compositions and related devices and methods (II)

A composition comprising: at least one conjugated polymer, at least one second polymer comprising repeat units represented by: (I) optionally, &#x2014;[CH&#x2014;CH(Ph-OH)]&#x2014; and (II) &#x2014;[CH&#x2014;CH(Ph-OR)]&#x2014; wherein Ph is a phenyl ring and R comprises a fluorinated group, an alkyl group, an alkylsulfonic acid group, an alkylene oxide group, or a combination thereof is described. Other polymers can be used as second polymer including polymers comprising modified naphthol side groups. The composition can be used in hole injection and hole transport layers for organic electronic devices. Increased lifetime and better processability can be achieved. Versatility with useful OLED emitters can be achieved. Ink formulations can be adapted for ink jet printing. The conjugated polymer can be a polythiophene. Applications include OLEDs and OPVs.

Growing community of inventors

Pittsburgh, PA, United States of America

Christopher T Brown