Cambridge Display Technology Limited

Sumitomo Chemical Company, Limited

General Electric Company

Cdt Oxford Limited

Sumitomo Chemical Companylimited

Matthew Roberts

Michael Cass

Clare Foden

Simon King

Daniel Forsythe

Nalinkumar Lallubhai Patel

Timothy Butler

Jie Jerry Liu

Anil Raj Duggal

Euan Christopher Smith

Martin Humphries

Craig Edward Murphy

William Tarran

William Young

Nicholas De Brissac Baynes

Jonathan Nigel Pillow

Kiran Timothy Kamtekar

Ruth Pegington

Mark Leadbeater

Salvatore Cina

Martina Pintani

Robert Sidney Archer

David Mohamad

Nathan Luke Phillips

Florence Bourcet

Sophie Barbara Heidenhain

Nir Yaacobi-Gross

Gianluca Bovo

Fredrik Jakobsson

Natasha M J Conway

Nicholas Baynes

Andrey Nikolaenko

May Wheeler

Irene Zaccari

A light-emitting polymer comprising a light-emitting repeat unit in a backbone of the polymer, wherein the polymer has an anisotropy of no more than 0.8 and wherein a transition dipole moment of the light-emitting repeat unit is aligned with the polymer backbone.

Organic light emitting polymer comprising light-emitting repeat unit in backbone of polymer and device therewith

An organic photodetector comprising an anode (), a cathode () and a layer () comprising an organic electron donor and an organic electron acceptor between the anode and the cathode wherein the weight of the organic electron acceptor is less than 2 times that of the electron donor. The organic electron acceptor may be a fullerene. The organic electron donor may be a conjugated polymer.

Organic photodetector

A device for optically exciting fluorescence is disclosed. The device comprises transparent substrate having first and second opposite faces and a multilayer stack disposed on the second face of the substrate. The multilayer stack comprises a first layer having first and second opposite faces and a first refractive index and a second layer having first and second opposite faces and a second refractive index. The first face of the first layer is disposed on the second face of the substrate. The first face of the second layer is disposed on the second face of the first layer such that the first layer is interposed between the second layer and the substrate. The substrate has a third refractive index. The first refractive index is less than the second refractive index and the third refractive index. The device comprises a light source carried by the first face of the substrate and arranged to emit light towards the first face of the first layer.

Device for optically exciting fluorescence

A method includes determining the presence or concentration of an analyte in a sample. Determining the presence or concentration of an analyte in a sample includes receiving a first image containing an image of the sample, the first image obtained using an image sensor having two or more colour channels. Determining the presence or concentration of an analyte in a sample includes extracting first and second mono-colour arrays from the first image, the first and second mono-colour arrays corresponding to different colour channels of the image sensor, wherein each mono-colour array comprises one or more entries and each entry is determined by aggregating one or more pixels of the first image. Determining the presence or concentration of an analyte in a sample includes determining a filtered array based on the first and second mono-colour arrays, each entry of the filtered array calculated as a ratio of the corresponding entries of the first and second mono-colour arrays, or calculated as a difference of the corresponding entries of the first and second mono-colour images. Determining the presence or concentration of an analyte in a sample includes determining the presence or concentration of the analyte based on the filtered array.

Methods for colorimetric analysis

A polymer comprising a fluorescent light-emitting repeating unit comprising a group of formula ED-EA wherein ED is an electron-donating unit; EA is an electron-accepting unit; and a band gap Egof a charge-transfer state formed from the electron-donating unit and the electron-accepting unit is smaller than the bandgap of either the electron-accepting unit Egor that of the electron-donating unit Eg.

Organic light-emitting polymer and device

Composition which may be useful in an organic light emitting diode, the composition having a fluorescent light-emitting polymer with light-emitting repeat units, and a triplet-accepting unit mixed with the light-emitting polymer.

Organic light-emitting device and method

Composition for use in an organic light-emitting device, the composition having a fluorescent light-emitting material and a triplet-accepting material subject to the following energetic scheme: 2&#xd7;T&#x3e;S&#x3e;S, or T+T&#x3e;S&#x3e;Sin which: T1A represents a triplet excited state energy level of the triplet-accepting material; TIE represents a triplet excited state energy level of the light-emitting material; Srepresents a singlet excited state energy level of the triplet-accepting material; and Srepresents a singlet excited state energy level of the light-emitting material; and in which light emitted by the composition upon excitation includes delayed fluorescence.

A polymer comprising a repeat unit of formula (I): (I) wherein Arand Areach independently represent a substituted or unsubstituted aryl or heteroaryl group; Sp represents a spacer group comprising a chain of at least 2 aliphatic carbon atoms spacing Arfrom Ar; m is at least 1; and if m is greater than 1 then &#x2014;(Ar)m forms a linear or branched chain of Argroups in which Arin each occurrence may be the same or different. 

Fluorene containing copolymer used in light emitting devices

A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV.

Organic light emissive device comprising a trilayer cathode including a layer comprising sodium fluoride

Organic light emissive device comprising a trilayer cathode

An organic light emissive device comprising: a first electrode; a second electrode; and an organic light emissive region between the first and second electrodes comprising an organic light emissive material which has a peak emission wavelength, wherein at least one of the electrodes is transparent and comprises a composite of a charge injecting metal and another material which is codepositable with the charge injecting metal, the other material having a different refractive index to that of the charge injecting metal and wherein the other material has a lower degree of quenching at the peak emission wavelength than the charge injecting metal whereby quenching of excitons by the at least one electrode is reduced, the charge injecting metal comprising either a low work function metal having a work function of no more than 3.5 eV or a high work function metal having a work function of no less than 4.5 eV.

Light emissive device having cathode comprising a codeposited mixed layer

An organic electroluminescent device comprising: a transparent substrate; a first electrode; a second reflective electrode and an organic light-emitting region for emitting light of a wavelength 1 from a recombination zone within the light-emissive region, and a microcavity formed between the substrate and the second electrode, the distance between the transparent substrate and the second electrode being [(&#xbc;ni)l+(&#xbd;nj)al]&#xb1;40 nm, where a is zero or a positive integer, ni is an average refractive index of the material disposed between the recombination zone and the second electrode and nj is an average refractive index of the material disposed between the recombination zone and the substrate.

Organic electroluminescent device

Light emissive device having electrode comprising a metal and a material which is codepositable with the metal

A method of forming an optical device comprising the steps of: providing a substrate comprising a first electrode capable of injecting or accepting charge carriers of a first type; forming over the first electrode a first layer that is at least partially insoluble in a solvent by depositing a first semiconducting material that is free of cross-linkable vinyl or ethynyl groups and is, at the time of deposition, soluble in the solvent; forming a second layer in contact with the first layer and comprising a second semiconducting material by depositing a second semiconducting material from a solution in the solvent; and forming over the second layer a second electrode capable of injecting or accepting charge carriers of a second type wherein the first layer is rendered at least partially insoluble by one or more of heat, vacuum and ambient drying treatment following deposition of the first semiconducting material.

Optical device

Growing community of inventors

Cambridge, United Kingdom

Matthew Roberts