Affiliation: | 1. Centre for Solar Energy Research (CSER), Glynd?r University St. Asaph, OpTIC Ffordd William Morgan, Denbighshire LL17 0JD, UKa.clayton@glyndwr.ac.uk;3. Centre for Solar Energy Research (CSER), Glynd?r University St. Asaph, OpTIC Ffordd William Morgan, Denbighshire LL17 0JD, UK;4. Sustainable Product Engineering Centre for Innovative Functional Industrial Coatings (SPECIFIC), Swansea University, Baglan Bay Innovation Centre, Baglan, Port Talbot SA12 7AX, UK |