ETFE-PV – Photovoltaic elements based on EFTE and CIGS thin-film solar cells
| Project director | Prof. Dr.-Ing. Bernhard Weller |
| Employee | Dipl.-LM-Chem. Christiane Kothe |
| Funding | Bundesinstitut für Bau-, Stadt- und Raumforschung/Forschungsinitiative "Zukunft Bau" |
| Period | 2012-2013 |
Objectives and work programme
The use of photovoltaic (PV) systems for energy generation has become highly significant in the field of building construction. There is always a need for new technologies and construction materials that not only fulfil their structural functions, but can also be used for energy generation in combination with PV elements. The idea of using membrane structures with integrated PV elements is one potential option.
The objective of the proposed project is to develop a process for the application of thin-film PV modules (CIGS) onto lightweight membrane structures. The difficulties of doing so arise from the varying expansion and temperature behaviours of the individual layers, and from the poor availability of anti-adhesive fluoropolymer film (EFTE). Moreover, CIGS thin-film cells are extremely sensitive to moisture. A simple covering with an EFTE film would be a conceivable option, however this would not be impervious to vapour diffusion, meaning that the covered PV module could be damaged over time. As such, there is a need to optimise the diffusion and adhesive properties of EFTE films. The project is intended to result in a prototype for a long-lasting and functional PV laminate.
Partners
Nowofol Kunststoffprodukte GmbH & Co. KG, Siegsdorf,
Solarion AG, Leipzig.