Ab-initio calculation of the electronic and optical excitations in polythiophene: effects of intra- and interchain screening

J. -W. van der Horst, P. A. Bobbert, M. A. J. Michels +2

We present an calculation of the electronic and optical excitations of an isolated polythiophene chain as well as of bulk polythiophene. We use the GW approximation for the electro…