{"id":163812,"date":"2025-12-23T08:35:09","date_gmt":"2025-12-23T08:35:09","guid":{"rendered":"https:\/\/www.pv-tech.org\/?p=163812"},"modified":"2025-12-23T08:35:13","modified_gmt":"2025-12-23T08:35:13","slug":"researchers-tackle-topcon-efficiency-cost-bifaciliaty-trilemma","status":"publish","type":"post","link":"https:\/\/www.pv-tech.org\/researchers-tackle-topcon-efficiency-cost-bifaciliaty-trilemma\/","title":{"rendered":"Researchers tackle TOPCon \u2018efficiency-cost-bifaciliaty trilemma\u2019"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"800\" src=\"https:\/\/www.pv-tech.org\/wp-content\/uploads\/2025\/12\/TOPCon-trilemma.jpg\" alt=\"\" class=\"wp-image-163813\" srcset=\"https:\/\/www.pv-tech.org\/wp-content\/uploads\/2025\/12\/TOPCon-trilemma.jpg 800w, https:\/\/www.pv-tech.org\/wp-content\/uploads\/2025\/12\/TOPCon-trilemma-300x300.jpg 300w, https:\/\/www.pv-tech.org\/wp-content\/uploads\/2025\/12\/TOPCon-trilemma-150x150.jpg 150w, https:\/\/www.pv-tech.org\/wp-content\/uploads\/2025\/12\/TOPCon-trilemma-768x768.jpg 768w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><figcaption class=\"wp-element-caption\">The NIMTE researchers said balancing further efficiency gains, bifaciliality levels and manufacturing costs in TOPCon was a &#8216;significant challenge&#8217;. Image: NIMTE.<\/figcaption><\/figure>\n\n\n\n<p>Chinese researchers have developed a new process they claim boosts the efficiency and bifacial performance of tunnel oxide passivating contact (TOPCon) solar cells while reducing silver consumption.<\/p>\n\n\n\n<p>TOPCon cell technology has established a dominant market position in recent years, but the team from the Ningbo Institute of Materials Technology and Engineering (NIMTE) at the Chinese Academy of Sciences identified a \u201csignificant challenge\u201d in balancing efficiency, manufacturing cost and bifacial energy yield in the technology.<\/p>\n\n\n\n<p>\u201cOvercoming this efficiency-cost-bifaciality trilemma is crucial for enhancing the competitiveness and accelerating the deployment of TOPCon technology,\u201d they said.<\/p>\n\n\n\n<p>The team, led by NIMTE\u2019s Professor Ye Jichun, developed a process that integrates a precision steel-stencil printing technology and a local polysilicon contact design to achieve a certified efficiency of 26.09% on industrial-grade M10 silicon wafers.<\/p>\n\n\n\n<p>Additionally, the researchers noted that the transition from conventional screen printing to steel-stencil printing enabled the use of narrow fingers, resulting in \u201csubstantial\u201d savings in silver consumption. Reducing silver in PV cells is seen as a <a href=\"https:\/\/www.pv-tech.org\/the-copper-standard-could-new-cell-manufacturing-processes-replace-silver\/\">key area for future cost savings<\/a>.<\/p>\n\n\n\n<p>Meanwhile, they said the laser-patterned localised polysilicon contact design improved cell bifaciliatiy by optimising the trade-off between carrier transport and parasitic absorption. A bifaciliaty level of ~90% was reported, a level they said was \u201cbeneficial for practical energy yield\u201d.<\/p>\n\n\n\n<p>Concluding, the researchers noted: \u201cBy demonstrating a viable path to simultaneously enhance efficiency, lower silver consumption, and unlock bifacial gains, this work provides a scalable blueprint for photovoltaic manufacturing, strengthening the position of TOPCon technology for terawatt-scale sustainable energy deployment.\u201d<\/p>\n\n\n\n<p>The process is presented in a paper published in the journal <em><a href=\"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S254243512500412X\">Joule<\/a>.<\/em><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Chinese researchers have developed a process to boost the efficiency and bifacial performance of TOPCon solar cells while reducing silver consumption.<\/p>\n","protected":false},"author":3,"featured_media":163813,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[13698,69,73,1653,10050,428],"paywall-tags":[],"regions":[],"industry-segments":[13,8],"class_list":["post-163812","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-bifaciality","tag-csi-manufacturing","tag-china","tag-pv-cells","tag-silver","tag-topcon","industry-segments-cell-processing","industry-segments-manufacturing"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v26.4 (Yoast SEO v26.4) - 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