1. Environment and Sustainability Institute (ESI) University of Exeter Penryn Campus; Penryn Cornwall TR10 9FE UK
2. School of Chemistry and Chemical Engineering Queen's University Belfast David Keir Building; Belfast BT9 5AG UK
3. Solar Energy Research Institute National University of Malaysia; 43600 Bangi Selangor Malaysia
4. College of Engineering Swansea University; Singleton Park Swansea SA2 8PP UK