Electronic device comprising a columnar discotic phase

Method of forming an electronic structure comprising the steps of:

• applying a first layer of essentially parallely oriented discotic molecules to a substrate,
• depositing a second layer of a discotic material on said first layer, the material of said second layer being capable of forming a columnar discotic phase of the material of said first layer, said second layer containing interspaces between columns of discotic material opening to the surface of the second layer,
• introducing a second material having delectric properties different from those of the material of said second layer into at least some of the interspaces of said second layer.

An electronic device comprising two adjacent regions of materials with different electric properties, characterized in that one of the regions is formed by a columnar structure of a discotic liquid crystal material, said structure having interspaces defined between columns of said discotic liquid crystal material, wherein said interspaces are part of the second region and are filled with a second material that has a conductivity which is different from that of said discotic liquid crystal material so that a p-n junction is formed in the region of said columns.