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Bosch Solar Energy, formerly ersol Solar is presenting its high-efficiency crystalline and thin-film products at this years EU PVSEC in Hamburg, in Hall B6, Stand 80. Bosch Solar is showing for the first time its monocrystalline MWT rear-side contact cells (metal wrap-through cells), developed together with Fraunhofer ISE. As the front bus bars have been shifted to the back of the panel the cells become more efficient.
“We are quite proud of this successful project work. After all, no other company has so far been able to implement the MWT cell concept with monocrystalline wafers,” commented Dr. Hans-Joachim Krokoszinski, Head of Engineering Crystalline Cells, describing the first results of development in the field of MWT rear-side contacts.
Work has now started on the final project phase, in which the contact structure and process parameters will be optimized.
Bosch Solar’s thin-film product portfolio is to be supplemented by a micromorphous product with a frame. With its thermally toughened front glass panel, it has a mechanical strength of 2400 pascal. Weighing in at only 16 kilograms, it is substantially lighter than conventional thin-film glass-glass laminates, which weigh around 25 kilograms. A low voltage concept is also in preparation.
New module prototypes also include a crystalline solar module on the basis of black monocrystalline silicon solar cells. With a black anodized frame and black backing foil, this model has been given a completely monochromatic design to satisfy the strict demands made on appearance in special architectural settings.
