Photoresponsive devices

US6872970B2 · kind B2 · utility

Assignee

• Cambridge Display Technology Limited · GB

Inventors

• Jonathan Halls · Cambridge, GB
• Richard Henry Friend · Cambridge, GB

Key dates

• Filing date: Dec 18, 2003
• Grant date: Mar 29, 2005
• Expiry date: Dec 18, 2023

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P70/50

Abstract

A method of preparing an efficient photoresponsive device includes the steps of providing a first electrode on a substrate, providing a layer of an organic material including a blend of at least two semiconductive polymers having different electrode affinities and/or different ionization potentials over the first electrode, providing a second electrode over the layer of organic material, at least one of the electrodes being a transparent or semi-transparent, to form a photoresponsive device, and thermally annealing the photoresponsive device.