Cambridge Display Technology Limited

Sumitomo Chemical Company, Limited

Cdt Oxford Limited

Flexenable Limited

Richard J Wilson

Richard Henry Friend

Ilaria Grizzi

Jeremy H Burroughes

Henning Sirringhaus

Martin Humphries

Jonathan J Halls

Natasha M Conway

Thomas Kugler

Mary Joyce McKiernan

Mark Dowling

Jonathan Nigel Pillow

Clare Foden

Florence Bourcet

Thomas Pounds

Ruth Pegington

Sophie Barbara Heidenhain

Nalinkumar Lallubhai Patel

Tania Zuberi

Masato Shakutsui

Simon King

Martina Pintani

Richard Boakye Owoare

Robert Sidney Archer

Helen Middleton

Shohgo Yamauchi

Martial Berry

Valerie Grand

Norihito Ito

Tadashi Goda

Alexander Doust

Oscar Fernandez

Antonio Guerrero Castillejo

Sarah M Tyler

Thomas J Kugler

Sophie Heidenhain

Natasha Conway

An organic electronic device comprising an anode, a cathode, a semiconducting layer between the anode and the cathode and a hole transporting layer between the anode and the semiconducting layer, the hole-transporting layer comprising a co-polymer comprising repeat units of formula (I) and one or more co-repeat units: (I) wherein: Arindependently in each occurrence represents a fused aryl or fused heteroaryl group that may be unsubstituted or substituted with one or more substituents; Arrepresents an aryl or heteroaryl group that may be unsubstituted or substituted with one or more substituents; R independently in each occurrence represents a substituent; and m is 1 or 2, preferably 1; and each Aris directly bound to an aromatic or heteroaromatic group of a co-repeat unit. 

Amino fluorene monomers, polymers, and organic electronic devices

The present invention relates to a compound of general formula (I) which can transport holes in an organic optoelectronic device, and to blends and solutions comprising the compound of general formula (I):  

Compound

A light-emitting composition comprises a polymer and a phosphorescent light-emitting material. The polymer comprises conjugating repeat units of formula (I) and up to 20 mol % of conjugation-blocking repeat units of repeat units of formula (II):  Arrepresents an aryl or heteroaryl group; R, which may be the same or different in each occurrence, is a substituent; p is 0 or an integer; Arin each occurrence independently represents a substituted or unsubstituted aryl or heteroaryl group; and Sprepresents an acyclic spacer group that does not provide any conjugation path between the two groups Ar. Optionally, p is 0, 1, 2, 3 or 4 and each Ris a non-polar substituent. Each Ris advantageously selected from Chydrocarbyl substituents. A light-emitting device comprises an anode, a cathode and a light-emitting layer between the anode and the cathode, the light-emitting layer comprising a light-emitting composition as described.

Light emitting composition and device

Disclosed is a crosslinkable light-emitting composition comprising at least one host material, at least one phosphorescent light-emitting dopant, a first crosslinker comprising an unsaturated carbon-carbon bond group and a second crosslinker comprising a ring system capable of undergoing ring-opening crosslinking.

Organic light emitting composition, device and method

A white light emitting device having an anode and a cathode and therebetween an organic electroluminescent layer which emits white light on the provision of a current between the anode and the cathode, said organic electroluminescent layer including a plurality of electroluminescent zones in laterally separated arrangement, the first of said electroluminescent zones including a first polymer and the second of said electroluminescent zones including a second polymer, wherein the first polymer includes a fluorescent blue light emitting species and the second polymer includes a fluorescent green light emitting species, said first and/or second zones further including a phosphorescent red light emitting species, such that together with the blue emitting species results in the emission of white light, said first and second polymers being physically incompatible so that separation of the zones pertains.

Electroluminescence from a plurality of electroluminescent zones in a laterally separated arrangement

A method is provided to produce an opto-electronic device comprising a substrate, a first electrode layer, a second electrode layer of opposite polarity to said first electrode layer, any interlayers and, between said first and second electrode layers, a first functional material in interfacial contact with a second functional material, wherein the first functional material has the structure of a laterally porous film and the second functional material is a film disposed over and interpenetrating with the film of the first functional material.

Method of preparing opto-electronic device

An organic light emissive device, which comprises: an anode; a cathode; and an organic light emissive region between the anode and the cathode, which region comprises: a layer of blue light electroluminescent organic material which emits light having first CIE co-ordinates by exciton radiative decay; and a layer of longer wavelength electroluminescent organic material which intrinsically emits light having second CIE co-ordinates by exciton radiative decay; wherein the layers of blue light and longer wavelength materials are selected so that the organic light emissive region emits white light falling within a region having a CIE &#x3c7; coordinate equivalent to that emitted by a black body at 3000-9000K and CIE &#x3b3; co-ordinate of said light emitted by a black body.

Light emissive device

An organic light emissive device, which comprises: an anode; a cathode; and an organic light emissive region between the anode and the cathode, which region comprises a polymeric electroluminescent material; wherein the emission from the polymeric electroluminescent material is color shifted by the presence of a color shifting unit in the polymer.

A white light emitting material comprising a polymer having an emitting polymer chain and at least one emitting end capping group.

White light emitting material

The present invention provides a process for the adjustment of the electron acceptor strength of a transition metal oxide (TMO) to the HOMO of a semiconducting hole transport layer material (HTL material) in a device comprising an anode, a layer of said TMO deposited on said anode and a layer of said HTL material deposited on said TMO layer, comprising: depositing a solution comprising a precursor for said TMO on said anode, wherein the precursor solution has a pH selected so that the acceptor strength of the TMO for which the solution is a precursor is adjusted to the HOMO of said HTL material; drying the deposited solution to form a solid layer precursor layer; depositing a solution of said HTL material onto said solid layer precursor layer; and annealing thermally the resulting product to give the desired device having TMO at the interface between said anode and said HTL.

Process for controlling the acceptor strength of solution-processed transition metal oxides for OLED applications

An organic electroluminescent device having a plurality of pixels, the device comprising: an anode formed on a substrate; an organic electroluminescent layer formed on the anode in each well of a well-defining layer to form the plurality of pixels; a cathode layer on the electroluminescent layer and a layer of metal on the top surface of the well-defining layer; wherein a conductive layer is deposited over the cathode layer and the metal layer to electrically connect the cathode layer on the electroluminescent layer with the metal layer on the top surface of the well-defining layer.

Organic electroluminescent device

An organic electroluminescent device comprises an anode; a cathode; a first electroluminescent layer between the anode and the cathode comprising an electron transporting material; and a second electroluminescent layer between the first electroluminescent layer and the anode. The second electroluminescent layer comprises a hole transporting material and an electroluminescent electron trapping material. The first electroluminescent layer may comprises a polymer having an electron transporting material and an electroluminescent material, and may include an optionally electroluminescent hole-transporting material. The electron transporting material and one or both of the hole transporting material of the first electroluminescent layer and the electroluminescent material of the first electroluminescent layer are part of the same molecule or polymer. Preferably, the electron transporting material comprises a plurality of adjacent arylene repeat units.

Organic electroluminescent device and method of fabrication

An electronic device containing a hole transporting semiconductive polymer comprising a first repeat unit comprising a first nitrogen of a triarylamine in the polymer backbone and a second nitrogen of an arylamine pendant from the polymer backbone, characterised in that said semiconductive polymer performs the function of transporting holes to or from a semiconductive material in said device.

Electronic device

A method of producing an encapsulated module of interconnected opto-electronic devices which comprises: forming a patterned anode layer; forming a layer of opto-electronically active material over the patterned anode layer; forming a patterned cathode layer over the layer of opto-electronically active material, to provide a device array of opto-electronically active cells on the substrate; selectively removing portions of the layer of opto-electronically active material so as to expose minor portions of the anodes; forming a patterned interconnect layer on an encapsulating sheet in a pattern to define an array of interconnect pads; and laminating the patterned encapsulating sheet over the array of opto-electronically active cells whereby the exposed anode portions are interconnected with the cathodes of adjacent cells by the interconnect pads and the interconnected cells are encapsulated by the encapsulating sheet.

Laminated interconnects for organic opto-electronic device modules and method

A pulsed driven display comprising an organic light-emitting device, said device comprising an organic layer comprising a semiconductive polymer, said polymer comprising a fluorene or triarylamine repeat unit, the fluorene or triarylamine repeat unit having a group R pendent from the polymer backbone, wherein R has general formula I:

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Godmanchester, United Kingdom

Richard J Wilson