Our activities on concentrator module development are merged in Con-TEC. Here, we develop new generations of PV modules with high and low concentration factors, and test components and production processes. Further foci of our research are reliability and materials analysis. We have already demonstrated lens-based FLATCON® modules with efficiencies of up to 36.7 % (CSTC) that were manufactured on semi-automated production equipment. We support companies along the complete value chain for concentrating photovoltaics.
In Con-TEC, we use our production-relevant fabrication processes to produce concentrator modules with the highest efficiency and demonstrate ways to reduce costs. We produce prototypes in small series to evaluate new components, designs and processes. Our possibilities and experience in selecting and processing optical silicone materials are unique; we use silicones to produce optical elements, for optical coupling in secondary optics or to encapsulate solar cells.
Regarding the investigation of the reliability of assemblies, in concentrating photovoltaics, particularly the thermal interconnection of the solar cell to the substrate is decisive. This is because the concentrated irradiation means that very large energy fluxes have to be transferred. Accelerated aging tests are carried out to investigate the long-term stability of the modules or components.