1. Maynooth University, The Callan Institute, Department of Electronic Engineering, Maynooth, County Kildare, Republic of Ireland
2. University College Dublin, College of Science, School of Physics, Belfield, Dublin 4, Republic of Ireland
3. University College Dublin, College of College of Engineering & Architecture, School of Electrical, Electronic and Communications Engineering, Communications and Optoelectronic Research Centre, SFI Strategic Research Cluster in Solar Energy Conversion, Bel