Organic Materials

A conjugated organic material covers carbon-based polymers and small molecules, such compounds may have metallic conductivity or can be semiconductors.  Semiconducting small molecules (aromatic hydrocarbons) include the polycyclic aromatic compounds pentacene, rubrene, and C60.  Polymeric organic semiconductors include poly(3-hexylthiophene), poly(p-phenylene vinylene), as well as polyfluorene and its derivatives. 

Organic electronics (or plastic electronics) is a branch of electronics made with conductive polymers, or small molecules.  This contrasts with traditional electronics, which relies on inorganic conductors such as silicon or metals.  Organic electronics is expected to facilitate widespread, very low-cost for applications such as flexible displays, portable solar cells, smart labels, decorative and active clothing. 

Reference

1. http://en.wikipedia.org/wiki/Organic_semiconductor

2. http://en.wikipedia.org/wiki/Printed_electronics

3. http://en.wikipedia.org/wiki/Conductive_polymer