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Solar cell demand for bifacial and singulated-cell module architectures

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By Nico Wöhrle; Elmar Lohmüller; Max Mittag; Anamaria Moldovan; Puzant Baliozian; Tobias Fellmeth; Karin Krauss; Achim Kraft; Ralf Preu

The first appearance of a shingled solar cell interconnection pattern (see Fig. 1) dates back to 1956 with a US patent filed by Dickson [1] for Hoffman Electronics Corporation, which is just two years after the first publication of a silicon solar cell by Chapin et al. [2]. In the years that followed, further patents were filed containing concepts of shingling solar cells serving various module designs and applications – for example, Nielsen [3] for Nokia Bell Labs, Myer [4] for Hughes Aircraft Company, Baron [5] for Trw Inc, Gochermann and Soll [6] for Daimler-Benz Aerospace AG, Yang et al.

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In this issue of Photovoltaics International Fraunhofer ISE presents a concept for a bifacial, shingled cell technology that it claims tracks a cost-effective route to a 400W module using existing industrial-scale concepts. Also one trend now much more than a notion is the ongoing switch to monocrystalline cell technology. Meanwhile the University of New South Wales pulls together and critically assesses the raft of research on perovskite PV technology. Following the success of our PV CellTech conference, we’re also introducing our new PV ModuleTech event focusing on the technology that turns completed cells into supplied modules in the commercial market.

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