A grant from the EPSRC has been awarded to Dr Martin Paterson in collaboration with Prof. Ian Galbraith (HWU Physics), and Prof. Ifor Samuel (St Andrews Physics). The Heriot-Watt share is for £439k for 3 years and is titled "The Influence of Excited State Physics in Conjugated Polymer Devices". The project will involve the use of non-linear response theory to model the electronic structure, and relaxation processes occurring in the important new class of optoelectronic devices built from conjugated organic materials.