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Nov 29th, 2012
 
Organic solar cells on steel
 
ThyssenKrupp Steel Europe and Solliance are counting on a highly promising form of power generation: organic photovoltaics (OPV).
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  • ThyssenKrupp Steel Europe and Solliance will collaborate on the development of organic solar cells on steel.

OPVs are flexible solar cells made of light-active plastics and can be manufactured by cost-effective processes suitable for large-scale production. They may be less efficient than previous rigid solar cells based on silicon but they offer the potential to be made in large quantities at low cost and with reduced resource use. They therefore offer advantages when used on large surfaces, for example on roofs and facades of industrial buildings, where panels made of organic coated steel are typically used. To further develop this innovative technology, new processes are to be investigated to incorporate OPVs into flat steel products for use in the construction industry. This is the reason why ThyssenKrupp Steel Europe, one of the leading suppliers of coated flat steel products, is joining the Solliance research program on organic photovoltaics.

The growing trend in the construction industry is to reduce the amount of energy used by buildings over their lifetime. The aim is to create energy-neutral and energy self-sufficient buildings. One way is to integrate renewable energy generating technologies such as solar cells into the building envelope. In contrast to PV systems fitted to a building afterwards, building integrated photovoltaics (BIPV) completely merges the building and the power generating functions. The aim is to equip the steel strip from which the panels are made with the OPV functionality during production.

Integrating OPV into flat steel products brings clear benefits over previous thin film solar cells and could accelerate the trend towards market-ready products. OPV is aesthetically pleasing, design-friendly and will encourage designers and building owners to adopt low-energy buildings. Integrated OPV could be used on both roofs and facades, giving a much larger generating area and increasing the amount of eco-friendly electricity produced.

One step in the production of steel panels is coil coating, in which flat steel strip is coated with paint, film or a paint/film combination in a continuous process.


 
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