Sumitomo Chemical Company, Limited

Cambridge Display Technology Limited

Gianluca Bovo

Nir Yaacobi-Gross

Matthew Roberts

A formulation comprising an n-type organic semiconductor, a p-type organic semiconductor and a solvent mixture comprising a first solvent and a second solvent wherein the first solvent is an alkylated aromatic hydrocarbon, for example trimethylbenzene, and the second solvent is a benzene substituted with two or more substituents including at least two Calkoxy groups, for example dimethoxybenzene. The formulation may be used to form the photoactive layer () of a photosensitive organic electronic device, for example an organic photo detector, comprising an anode () a cathode () and the photoactive layer between the anode and the cathode.

Solvent systems for the preparation of photosensitive organic electronic devices

An organic photodetector comprising a first electrode, a second electrode, and a photosensitive organic layer between the electrodes, the photosensitive organic layer comprising a donor polymer and an acceptor compound, characterized in that the acceptor compound has a LUMO level shallower than that of the fullerene derivative PCBM.

Organic photodetector with reduced dark current

This invention relates to a formulation comprising p-type and n-type organic semiconductors and a solvent mixture comprising an aromatic hydrocarbon substituted with one or more substituents selected from alkyl and alkoxy groups and a unsubstituted or substituted benzothiazole, for example 2-methylbenzothiazole. The formulation may be used to form the photoactive layer () of a photosensitive organic electronic device, for example an organic photodetector, comprising an anode () a cathode () and the photoactive layer between the anode and the cathode.

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.

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Godmanchester, United Kingdom

Gianluca Bovo