Ultra-thin and lightweight photovoltaic/thermal collectors for building integration

Unglazed PVT collector concepts to cover electricity and heat demands of LowEx Buildings have been experimentally and numerically evaluated. Critical aspects affecting electrical and thermal efficiency are identified. A promising solution was found in the direct lamination of thin-film solar cells onto a channel-plate thermal collector resulting in a highly efficient, super-light (<4kg/m2) and ultra-thin (<4mm) PVT collector. The lightweight design simplifies building integration and reduces the amount of materials and associated costs as well as environmental impacts.