Henning Sirringhaus
Cavendish Laboratory, University of Cambridge, UK
Date
14 October 2009
Host
Bertram Batlogg
Title
Charge Transport Physics of Conjugated Polymer Semiconductors
Abstract
Conjugated polymer semiconductors offer new opportunities for the controlled manufacturing of active electronic circuits by a combination of solution processing and direct printing. Polymer semiconductors are complex materials with strong electron-electron and electron-phonon coupling. We will review current understanding of their charge transport and device physics with a particular emphasis on understanding the electronic structure at polymer - polymer heterointerfaces. Recent advances include realization of ambipolar organic transistors in which electron and hole accumulation layers are induced in immediate proximity at the heterointerface and light-emission is observed from the recombination zone at which these two accumulation layers meet.