Cambridge Display Technology Limited

Sumitomo Chemical Company, Limited

Sumitomo Chemical Companylimited

Martina Pintani

Jonathan Nigel Pillow

Martin Humphries

Matthew Roberts

Michael Cass

Simon King

Ilaria Grizzi

Kiran Timothy Kamtekar

Richard J Wilson

Florence Bourcet

Clare Foden

Ruth Pegington

James Morey

Christian Nielsen

Martial Berry

Francesco Di Stasio

Torsten Bünnagel

Ian Johnson

A polymer comprising a repeat unit of formula (I): (I) wherein each Arand each Arindependently represents a substituted or unsubstituted aromatic or heteroaromatic group; each Cy independently represents a saturated heterocyclic or carbocyclic ring that may be unsubstituted or substituted with one or more substituents; n is 1, 2 or 3; and adjacent groups Armay be linked by a divalent linking group in the case where n is 2 or 3. The polymer may be used as a charge-transporting material or light-emitting material in an organic light-emitting device. 

Polymer

A composition suitable for use in an organic light-emitting layer () of an organic light-emitting device having an anode () and a cathode (), the composition comprising a fluorescent light-emitting material, a first triplet-accepting material and a second triplet-accepting material that is different from the first triplet-accepting material. The fluorescent light-emitting material may be a repeat unit of a light-emitting polymer, and the first and second triplet-accepting materials may independently be repeat units of the light-emitting polymer or may be mixed with the fluorescent light-emitting material.

Organic light-emitting compositions having multiple triplet-accepting materials, and devices and methods thereof

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 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

Composition having an organic semiconducting material and a triplet-accepting material of formula (I) with a triplet energy level lower than the triplet energy level of the organic semiconducting material, in which each Ar is optionally substituted aryl or heteroaryl group, n is 1-3, m is 1-5, q is 0 or 1, each Ris H or a substituent, and each Ris H or a substituent. Where Ris not H, Rand (Ar)bound to the same carbon atom may be linked by a direct bond or a divalent group. Where n or m is at least 2, adjacent Ar groups may be linked by a divalent group. Where q=0, Ris not H and is linked to (Ar)by a direct bond or a divalent group. 

Organic light-emitting material, device and method

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Godmanchester, United Kingdom

Martina Pintani