Cambridge Display Technology Limited

Sumitomo Chemical Company, Limited

Sumitomo Chemical Companylimited

Michael Cass

Martin Humphries

Jonathan Nigel Pillow

Kiran Timothy Kamtekar

Matthew Roberts

Ruth Pegington

William Tarran

Simon King

Martina Pintani

David Mohamad

Florence Bourcet

Sophie Barbara Heidenhain

Daniel Forsythe

Natasha M J Conway

Fredrik Jakobsson

Andrey Nikolaenko

Graham Anderson

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

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 monitoring an OLED production process for making an OLED device is disclosed. According to the method, at least one reference OLED device similar to said OLED device is fabricated. Said at least one reference OLED device has a layered structure corresponding to said OLED device and a range of hole injection and/or transport layer thicknesses. A spectral variation of a light output of said at least one reference OLED device with respect to variation in said hole injection and/or transport layer thickness is characterized. A said OLED device is partially fabricated by depositing one or more layers comprising at least said hole injection and/or transport layer and a thickness of said one or more layers is measured such that a light output for said partially fabricated OLED device can be predicted, in a target color space, from said measuring, using said characterized spectral variation.

Organic light emitting diode fabrication with hole transport/injection layer thickness measurement

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Cambridge, United Kingdom

Michael Cass