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Texture etching technologies for diamond-wire-sawn mc-Si solar cells

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By Jochen Rentsch, Fraunhofer Institute for Solar Energy Systems ISE, Freiburg, Germany; Bishal Kafle; Marc Hofmann; Katrin Krieg; Martin Zimmer

Optical confinement is essential in order to increase the amount of photogeneration in a crystalline silicon (c-Si) solar cell. Fraunhofer examines the compatible options for wafers created using diamond wire sawing.

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Welcome to the 38th edition of Photovoltaics International. There is every sign that 2018 is going to be a huge year for the industry as manufacturers continue investing in new tools and technologies. We will doubtless see many of the innovations whose evolution has been documented in these pages becoming increasingly mainstream. Sticking with bifacial solar, Fraunhofer ISE takes a wide-ranging look at a number of challenges surrounding the technology’s leap to widespread deployment. The Institute for Solar Energy Research Hamelin (ISFH) and Meyer Burger Technology AG present a novel bifacial module architecture. The University of New South Wales, Trina Solar and BT Imaging give a suggestion for predicting the variation in multicrystalline cell performance by measuring the bulk lifetime of ingots. We also have a look at PV recycling and lifecycle management from First Solar, PI Berlin’s assessment of PID issues in thin-film solar and TongWei presents a roadmap for PERC cells with 22% efficiency.

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