{"id":1825,"date":"2022-02-10T15:10:26","date_gmt":"2022-02-10T12:10:26","guid":{"rendered":"https:\/\/solar-schools.org\/perc-solar-cells-made-from-recycled-silicon\/"},"modified":"2025-02-19T17:08:19","modified_gmt":"2025-02-19T14:08:19","slug":"perc-solar-cells-made-from-recycled-silicon","status":"publish","type":"post","link":"https:\/\/solar-schools.org\/de\/perc-solar-cells-made-from-recycled-silicon\/","title":{"rendered":"PERC: Solarzellen aus recyceltem Silizium"},"content":{"rendered":"

Mehrere Start-ups und Initiativen in Deutschland und Europa haben bereits damit begonnen, wertvolle Rohstoffe wie Aluminium, Glas und Kupfer aus alten Photovoltaikmodulen zu recyceln. Denn aktuellen Sch\u00e4tzungen zufolge wird die Menge an weggeworfenen Solarmodulen allein in Deutschland bis Ende der 2020er Jahre auf \u00fcber 100.000 Tonnen pro Jahr ansteigen. (pv-magazine<\/a>, 11\/10\/2021)<\/p>\n

Das Fraunhofer-Center f\u00fcr Silizium-Photovoltaik CSP und das Fraunhofer-Institut f\u00fcr Solare Energiesysteme ISE haben gemeinsam mit dem Modulrecycling-Unternehmen Reiling ein Verfahren entwickelt, um Silizium aus alten kristallinen Solarmodulen im industriellen Ma\u00dfstab zu recyceln, sodass es erneut zur Herstellung neuer PERC-Solarzellen eingesetzt werden kann. Eine Einschr\u00e4nkung auf bestimmte Hersteller sollte es nicht geben: \u201eUns war es wichtig, einen skalierbaren Prozess zu entwickeln, der auch wirtschaftlich sinnvoll ist\u201c, betont Peter Dold, Projektleiter am Fraunhofer CSP. \u201eIm Labor ist vieles m\u00f6glich, unser neues Verfahren muss sich allerdings in der Recyclingindustrie bew\u00e4hren.\u201c (pv-magazine<\/a>, 2\/8\/2022)<\/p>\n

F\u00fcr dieses Verfahren werden Solarzellenfragmente aus Nebenprodukten eines bereits etablierten mechanischen Recyclingprozesses gesammelt. Am Fraunhofer CSP werden diese 0,1 bis 1 Millimeter gro\u00dfen Fragmente durch verschiedene Sortierverfahren von Plastik und Glas getrennt. Anschlie\u00dfend werden R\u00fcckkontakt, Silberkontakte, Antireflexschicht und Emitter durch nasschemisches \u00c4tzen schrittweise entfernt. Aus dem aufbereiteten Silizium werden monokristalline oder quasi-monokristalline Ingots hergestellt, die anschlie\u00dfend zu Wafern weiterverarbeitet werden. Die Kristallisation erfolgt unter Verwendung von 100 % recyceltem Silizium ohne Zusatz von hochreinem Silizium. Im ersten Testlauf erreichten die recycelten PERC-Solarzellen einen Wirkungsgrad von 19,7 Prozent. Zum Vergleich: Der durchschnittliche Wirkungsgrad neuer Premium-PERC-Solarzellen liegt bei etwa 22 Prozent.<\/p>\n

Quelle:<\/p>\n

pv-magazine, article by Petra Hannen (8.02.2022):<\/p>\n

https:\/\/www.pv-magazine.de\/2022\/02\/08\/fraunhofer-ise-fertigt-perc-solarzellen-aus-recyceltem-silizium-mit-197-prozent-wirkungsgrad\/<\/a>, accessed: 2\/9\/2022 at 11:15 a.m.<\/p>\n

pv-magazine, article by Petra Hannen (11\/10\/2021):<\/p>\n

https:\/\/www.pv-magazine.de\/2021\/11\/10\/solar-materials-will-rohstoffkreislauf-von-photovoltaik-modulen-schliessen\/<\/a>, accessed: 2\/9\/2022 at 11.40 a.m.<\/p>","protected":false},"excerpt":{"rendered":"

Several startups and initiatives in Germany and Europe have already begun recycling valuable raw materials such as aluminum, glass, and copper from\u00a0old photovoltaic modules. This is because according to current estimates, the amount of discarded solar modules in Germany alone will increase to over 100,000 tons annually by the end of the 2020s. (pv-magazine, 11\/10\/2021) […]<\/p>","protected":false},"author":1,"featured_media":1826,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-1825","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"yoast_head":"\nPERC solar cells made from recycled silicon - Solar Schools<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/solar-schools.org\/de\/perc-solar-cells-made-from-recycled-silicon\/\" \/>\n<meta property=\"og:locale\" content=\"de_DE\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"PERC solar cells made from recycled silicon - Solar Schools\" \/>\n<meta property=\"og:description\" content=\"Several startups and initiatives in Germany and Europe have already begun recycling valuable raw materials such as aluminum, glass, and copper from\u00a0old photovoltaic modules. 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