2025年电池与组件技术趋势：TOPCon、HJT及BC太阳能电池与组件的关键发展

Cell & Module Technology Trends 2025 Key Developments In TOPCon, HJT & BCSolar Cells and Modules Authors: Shravan K. Chunduri, Michael Schmela Executive Summary Today’s PV technology landscape reflects anecosystem where multiple technologies coexist.While TOPCon has emerged as the standard,its contemporaries – heterojunction (HJT) andthe more advanced back contact (BC) structure-are also in high-volume production, with notable undergone a key shift from doped amorphoussilicon to microcrystalline silicon, which has becomea standard. The next frontier lies in metallizationcost reduction. Manufacturers are moving in 3 keydirections: increasing the number of busbars andeventually eliminating them through zero-busbar Starting upstream, an important innovation in ingotproduction is LONGi’s proprietary TRCZ process,which offers precise resistivity control from seedto tail while maintaining RCZ’s cost advantages.TaiRay wafers made via TRCZ also enable bettergettering. Regarding wafer specifications, BC is the BC technology is more opaque compared toits peers due to the proprietary nature of itsdevelopment. However, insights from industryleaders like LONGi, AIKO, and SPIC reveal sharedthemes. BC is a platform that can be based onvarious cell architectures. However, the majority ofmanufacturers are using bipolar passivated contacts.Laser technology plays a vital role in BC solar cellmanufacturing, particularly in enabling the rear-sidestructuring that defines this architecture. While there In TOPCon, one major advancement is laser-assistedcontact formation, which decouples metal contactrecombination from contact resistivity. Depositionmethods like LPCVD and PECVD now delivercomparable performance, having overcome earlierlimitations. PVD is also emerging as a viable thirdoption. Another notable trend is edge passivation,addressing defects from slicing large wafers intohalves. Simultaneously, vendors are developingtools tailored to half-cell processing, a practice long At the module level, the industry is witnessing a shiftfrom a ‘one-size-fits-all’ approach to products toapplication-specific designs. Module manufacturersare now tailoring their BOMs to meet the diversedemands of different climates, installationenvironments, and system configurations. As a For HJT, the foundational structure has already Enjoy reading our Cell & Module Technology Trends 2025 Shravan K. ChunduriHead of Technology, TaiyangNewsshravan.chunduri@taiyangnews.info+91 996 327 0005 Michael SchmelaManaging Director, TaiyangNewsmichael.schmela@taiyangnews.info+49 173 15 70 999Duesseldorf, Germany ABC INFINITE Standard Size1762x1134x30Ultimate Power475W AIKO-A-MCE54Db Discover more at IntersolarA3.470at SNEC Contents Advertisers: •LONGip. 2•AIKOp. 4•JA Solarp. 6•JinkoSolarp. 10•DMEGC Solarp. 14•Trinasolarp. 19•VON ARDENNEp. 22•GCLp. 28•Tongweip. 31 © TaiyangNews 2025All rights reserved.Cell & Module Technology Trends 2025 The text, photos and graphs in this report are copyrighted (cover photo credit:JinkoSolar, AIKO, Huasun, LONGi ). TaiyangNews does not guarantee reliability,accuracy or completeness of this report's content. TaiyangNews does not accept Publisher:TaiyangNews UG (haftungsbeschraenkt)An der Golzheimer Heide 23 1. Introduction It’s remarkable how much the solar landscapehas transformed in just 5 years. What was oncea PERC-dominated world has now evolved intoa dynamic ecosystem led by TOPCon, with HJTand back-contact (BC) technologies also in thefray, backed with multi-GW scale capacities. Andit’s not just about new cell architectures – eachof these technologies is advancing at a steadyclip. Meanwhile, the module side – often seenas conservative – is also increasingly becoming These publications and forums take a deep dive intothe relevant aspects of each technology, providing a This report offers a bird’s-eye view of overalltechnology developments, focusing on keyadvancements across each mainstream PVtechnology. The TaiyangNews Cell & ModuleTechnology Trends 2025 report distils the coretrends driving the advancement of TOPCon and HJT, 1.1 Market Shares of Different Technologies Before going into the details, here is a quick peekinto the market shares of PV technologies. Thegraph below summarizes the market share estimates At TaiyangNews, we’ve been tracking thesetechnological shifts closely through our in-depthreports and insightful virtual conferences, providing TOPCon is the mainstream: The market share prediction from various sources, highlighting thecontinuing dominance of TOPCon in the near term, the gradual rise of XBC, and then HJT with the It is well known that TOPCon is the workhorse ofthe industry, and all sources unanimously agreethat TOPCon will dominate the cell technologylandscape. In 2025, CPIA and Exawatt forecastTOPCon to capture around 80% of the market share,while ITRPV estimates it slightly lower at close to70%. This leadership is expected to persist through earns a mention here. The