The impact of surface properties on photovoltaics' colour angular sensitivity: A comparison study for façade integration

Façade integrated photovoltaics are a promising way to employ renewable energy technology in the built environment. The colours of façade essential overall aesthetic quality buildings, especially urban context. Currently, several brands coloured available market for architects, however, unlike traditional materials, colorimetric characteristics PVs rarely studied. To provide foundation further research on and develop architectural design guidelines with photovoltaics, series colour angular sensitivity experiments have been carried out six different types opaque photovoltaics. photovoltaic samples were measured from distances at angles PR-655 spectroradiometer, laboratory outdoor experiments. experimental results show that surface properties including colour, texture, gloss strong impact photovoltaic's sensitivity. Goniochromatic phenomena found spectrally selective coating technique (Kromatix photovoltaics) anti-reflective coatings metallic texture (LOF photovoltaics). Samples filter low-gloss rough finishing (ISSOL insensitivity hue illumination conditions. mineral techniques (Sunage overcast illumination, while matt leads larger difference than direct sunlight illumination. This study also proposed basic suggestions integrate according their characteristic perspective.