2024年TaiyangNews高效太阳能技术会议第四天聚焦XBC及下一代技术。ISC Konstanz的Radovan Kopecek分享了他对新型技术效率竞赛的看法，他认为基于n型硅片的TOPCon、HJT和IBC等技术将在2027年后成为能源市场的主导，届时组件效率将超25%，度电成本将降至0.01美元/千瓦时以下。在这些技术中，背接触(BC)技术前景最为光明，预计7年后平均组件效率将达25.5%。他指出，目前市场上最高效的商业组件均采用n型BC技术，并预测2027年后双面BC将取代TOPCon，并在2036年发展为串联IBC双面电池。BC技术的优势在于高效率和低击穿电压，加之铜丝网印等技术创新，将引领太阳能光伏市场的未来。

💡n型硅片技术崛起：TOPCon、HJT和IBC等n型硅片技术将在2027年后主导能源市场，届时组件效率将超过25%，度电成本将显著降低。

☀️背接触(BC)技术潜力巨大：Kopecek预测，BC技术将在未来7年内实现平均组件效率25.5%，并将在2027年后取代TOPCon技术。

📈BC技术优势：BC技术的核心优势在于高效率和低击穿电压，同时，铜丝网印等创新技术将进一步降低成本，推动其发展。

🔄技术演进路线：预计2027年后，双面BC将取代TOPCon，并在2036年发展为串联IBC双面电池，实现技术迭代升级。

Day 4 of the 4-day TaiyangNews High Efficiency Solar Technologies 2024 conference was devoted to XBC and next-generation technologies. The keynote speaker for the day, the Co-Founder and Director of ISC Konstanz Radovan Kopecek, shared his perspectives on the efficiency race for various new-age technologies.  Known as the ‘pusher’ of the back contact (BC) technology, Kopecek sees nPV or n-type wafer-based solar technologies like TOPCon, HJT and interdigitated back contact (IBC) becoming the ‘emperor of energy markets’ 2027 onward when module efficiency will exceed 25% and the levelized cost of electricity (LCOE) will drop under $0.01/kWh.  Among these various n-type cell technologies, BC has the brightest future. “With BC technology, we will reach an average of 25.5% average module efficiency in 7 years from now,” forecasts Kopecek.   He referred to the top 2 commercial module efficiencies on the TaiyangNews Top Solar Module Listing to prove his point since both belong to n-type with BC cell technology from AIKO and Maxeon, both exceeding 24% (see TOP SOLAR MODULES Listing – November 2024).  TOPCon cell technology will no doubt lead the pack till at least 2026, post which Kopecek projects n-type BC bifacial to replace TOPCon from 2027 onwards when its bifaciality reaches 80%, till it incorporates as tandem IBC bifacial from 2036.  The biggest advantages of BC, he explained, are highest efficiencies and low breakdown voltage. Driven by these factors and also further advancements such as lower silver consumption as the industry innovates with copper screen printing, BC will lead the future of the solar PV market. Sustainable development will be the key going forward, added Kopecek, which will lead to cost reduction as well including the change from silver to copper an area where work is currently ongoing.  For more presentation videos and conference summaries for all 4 days of the TaiyangNews High Efficiency Solar Technologies 2024 Conference, click here for days 1 and 2, and here for days 3 and 4.