Photosensitive compositions useful for forming active patterns, methods of forming such active patterns and organic memory devices incorporating such active patterns

Abstract

Disclosed herein are compositions useful in forming organic active patterns that may, in turn, be incorporated in organic memory devices. The compositions comprise N-containing conjugated electroconductive polymer(s), photoacid generator(s) and organic solvent(s) capable of dissolving suitable quantifies of both the electroconductive polymer and the photoacid generator. Also disclosed are methods for patterning organic active layers formed using one or more of the compositions to produce organic active patterns, portions of which may be arranged between opposed electrodes to provide organic memory cells. The methods include directly exposing and developing the organic active layer to obtain fine patterns without the use of a separate masking pattern, for example, a photoresist pattern, thereby tending to simplify the fabrication process and reduce the associated costs.