Ifor Samuel is Professor of Physics at the University of St Andrews. He received his MA and PhD from the University of Cambridge, working on optical spectroscopy of organic semiconductors. He was a Research Fellow at Christ’s College, Cambridge and also performed postdoctoral work at CNET-France Telecom in Paris, before setting up his own research group on light-emitting polymers at the University of Durham. In 2000 he moved to the University of St Andrews where he founded and leads the Organic Semiconductor Centre. His current work concerns the photophysics of organic semiconductor materials and devices including organic light-emitting diodes, solar cells, lasers and their applications, and he has published more than 400 journal papers. He is a Fellow of the Royal Society of Edinburgh, the Institute of Physics, SPIE and the Royal Society of Chemistry.