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Development and optimization of favorable-cost and eco-friendly thick-film contacting processes for silicon solar cells
Thick-film contacting processes


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   The goal of the planned R&D project is to define conditions for improved, favorable-cost contacting of solar cells, preferably made of silicon materials, using novel future-oriented technologies in a complete production system. A key step in solar cell production is the application of front and back contacts using various printing methods and using a variety of printing pastes and inks. The optimization of the materials and production plants is decisive for reducing the overall costs and also for optimizing the effectiveness of the solar modules.

The project has the following specific goals:
Manufacture of favorable-cost pastes
Manufacture of eco-friendly pastes
Manufacture of optimized paste systems for reducing the stress in PV modules. This means that thinner cells with higher yield will be able to be “handled”.
Optimization of the production plants (screen printers) for generating finer lateral structures (25 µm) with high aspect ratio.
Introduction of new production processes involving ink-jet and hot-melt technology to further increase the performance parameters mentioned under 4).
Development of a roll-to-roll method suitable for thin film photovoltaic technology.

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