i-TOPCon cells had led TOPCon technology from the laboratory to industrialization, he said, expressing optimism over the technology's development. He forecast that the TOPCon technology besides heterojunction cells would continue to be used in the next generation of products. The implementation of tandem technology, which is expected to considerably improve cell efficiency, will be based on passivating contact technology as TOPCon, he said. Fraunhofer ISE introduced the concept of Tunnel Oxide Passivating Contact (TOPCon) cell technology in 2013. TOPCon laboratory cells achieved an efficiency of 26% in 2021.
TOPCon technology keeps leading in next-generation PV products
"The achievements of TOPCon technology have laid a foundation for the industry's development," Glunz told attendees. The efficiency of industrial TOPCon cells has exceeded 25%, an encouraging result, he said. TOPCon cell efficiency is expected to achieve even greater breakthroughs through the implementation of passivating front contact cell technology and tandem technology.
The upgrade and maturity of i-TOPCon technology have accelerated the industrialization of n-type products, propelling the industry into a higher power era of 700W+.
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