An organic semiconductor is a material primarily based on carbon and hydrogen that exhibits semiconducting properties, which includes single molecules, short chain (oligomers) and polymers. Organic semiconductors have quite different conduction mechanisms to inorganic semiconductors; for example, in the case of small molecules the charge carriers are typically localised to single molecular orbitals, known as the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO). Almost all organic solids are insulators, but when their constituent molecules have π-conjugate systems, charge carriers can move via π-electron overlaps, especially by hopping, tunnelling and related mechanisms.
We primarily on the electrical, magnetic and optical properties of organic materials. Areas of research include:
For more information about this work, please contact Prof. Gillin, Dr Kreouzis, or Dr Drew.