Cambridge Display Technology Limited

Martin Cacheiro

Julian Charles Carter

Christopher John Bright

Alec G Gunner

Peter John Lyon

A formulation for depositing a material on a substrate, the formulation comprising the material to be deposited on the substrate dissolved in a solvent system comprising a first solvent component having a relatively high boiling point and which exhibits a relatively low solubility with respect to the material to be deposited, and a second solvent component having a relatively low boiling point and which exhibits a relatively high solubility with respect to the material to be deposited.

Formulation and method for depositing a material on a substrate

A method for preparing an organic electronic or optoelectronic device is described. The method comprises depositing a layer of fluorinated polymer on a substrate, patterning the layer of fluorinated polymer to form a relief pattern and depositing from solution a layer of organic semiconductive or conductive material on the substrate. The fluorinated polymer may be a fluorinated photoresist and may be treated by exposure to ultraviolet light and ozone prior to the deposition of the layer of organic semiconductive or conductive material. The method has particular application in the preparation of organic light emitting devices by ink-jet printing.

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Ames, Spain

Martin Cacheiro