{"id":13906,"date":"2022-02-15T15:44:01","date_gmt":"2022-02-15T07:44:01","guid":{"rendered":"https:\/\/battery9999.com\/en\/?p=13906"},"modified":"2022-02-15T15:44:01","modified_gmt":"2022-02-15T07:44:01","slug":"german-consortium-develops-19-7-efficient-perc-solar-cells-made-of-recycled-silicon","status":"publish","type":"post","link":"https:\/\/battery9999.com\/en\/german-consortium-develops-19-7-efficient-perc-solar-cells-made-of-recycled-silicon\/","title":{"rendered":"German consortium develops 19.7%-efficient PERC solar cells made of recycled silicon"},"content":{"rendered":"

FEBRUARY 7, 2022<\/p>\n

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Led by German research institute Fraunhofer ISE, the consortium has built the solar cells with 100% crystalline silicon recycled from end-of-life photovoltaic panels. The silicon is recycled through a technique conceived by German specialist Reiling GmbH & Co. KG and the Fraunhofer Center for Silicon Photovoltaics CSP.<\/p>\n

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PERC solar cells made of 100 % recycled silicon with an efficiency of 19.7%.<\/p>\n

The\u00a0Fraunhofer Institute for Solar Energy Systems ISE<\/a>\u00a0is leading a German consortium in the development of PERC solar cells based on 100% crystalline silicon recycled from\u00a0end-of-life photovoltaic panels<\/a>.<\/p>\n

The silicon is recycled through a technique conceived by German specialist Reiling GmbH & Co. KG and the\u00a0Fraunhofer Center for Silicon Photovoltaics CSP<\/a>, which is claimed to recycle silicon from different types of modules, regardless of manufacturer and origin.<\/p>\n

\u201cAt Fraunhofer CSP, the cell fragments with sizes from 0.1 to 1 millimeter are first freed from the glass and plastic by various sorting processes,\u201d the Fraunhofer ISE said in a statement. \u201cThis is followed by the step-by-step removal of the backside contact, the silver contacts, the anti-reflective layer and finally the emitter by wet chemical etching. The silicon cleaned in this way is processed into monocrystalline or quasi-monocrystalline ingots in standard processes and then into wafers.\u201d<\/p>\n

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By-products of the treatment process at Reiling GmbH, from which the solar cell fragments are separated and collected (left). Purified silicon and wafers made from 100% recycled silicon (right).Image: Fraunhofer ISE<\/i><\/p>\n<\/figcaption><\/figure>\n<\/div>\n
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The\u00a0Fraunhofer Institute for Solar Energy Systems ISE<\/a>\u00a0is leading a German consortium in the development of PERC solar cells based on 100% crystalline silicon recycled from\u00a0end-of-life photovoltaic panels<\/a>.<\/p>\n

The silicon is recycled through a technique conceived by German specialist Reiling GmbH & Co. KG and the\u00a0Fraunhofer Center for Silicon Photovoltaics CSP<\/a>, which is claimed to recycle silicon from different types of modules, regardless of manufacturer and origin.<\/p>\n

\u201cAt Fraunhofer CSP, the cell fragments with sizes from 0.1 to 1 millimeter are first freed from the glass and plastic by various sorting processes,\u201d the Fraunhofer ISE said in a statement. \u201cThis is followed by the step-by-step removal of the backside contact, the silver contacts, the anti-reflective layer and finally the emitter by wet chemical etching. The silicon cleaned in this way is processed into monocrystalline or quasi-monocrystalline ingots in standard processes and then into wafers.\u201d<\/p>\n

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By-products of the treatment process at Reiling GmbH, from which the solar cell fragments are separated and collected (left). Purified silicon and wafers made from 100% recycled silicon (right).Image: Fraunhofer ISE<\/i><\/p>\n<\/figcaption><\/figure>\n

The German scientists said the cells were fabricated only with wafers relying on recycled silicon and that no commercial ultrapure silicon was added during the manufacturing process.<\/p>\n

The performance of the first trial PERC cells was tested and the devices were found to achieve a power conversion efficiency of 19.7%. \u201cThis is below the efficiency of today’s premium PERC solar cells, which have an efficiency of around 22.2 percent, but it is certainly above that of the solar cells in the old, discarded modules,\u201d said Peter Dold, project manager at Fraunhofer CSP, without providing more technical details.<\/p>\n

Source:German consortium develops 19.7%-efficient PERC solar cells made of recycled silicon \u2013 pv magazine International (pv-magazine.com)<\/a><\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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