Institution: | a Institut für Technische Optik, Universität Stuttgart, 70569 Stuttgart, Germany b School of Electrical, Electronic and Mechanical Engineering, College of Engineering, Mathematics and Physical Sciences, Optoelectronic Research Centre, The SFI-Strategic Research Cluster in Solar Energy Conversion, University College Dublin, Belfield, Dublin 4, Ireland c Department of Computer Science, National University of Ireland, Maynooth, County Kildare, Ireland d University of Oulu, RFMedia Laboratory, Oulu Southern Institute, Vierimaantie 5, 84100 Ylivieska, Finland |