Trinasolar sets 27th world record with n-type i-TOPCon cell achieving 25.9% efficiency

Trinasolar, a global leader in smart PV and energy storage solutions, has confirmed that its large-area industrial 210x182 mm n-type bifacial i-TOPCon cell has achieved an efficiency of 25.9%, setting a new world record for a solar cell of this type and size.

The record was verified by the Institute for Solar Energy Research in Hamelin (ISFH CalTeC) in Germany, and is the 27th time Trinasolar has set a world record in cell/module conversion efficiency or output power. This further emphasises the company’s innovation capabilities and leading position in the PV industry.

The record-breaking cell uses the pioneering rectangular wafer design of 210×182 mm, invented by Trinasolar. The substrate is an n-type phosphorus-doped Cz silicon wafer with a high-minority carrier lifetime. By integrating with tunnel oxide passivating contact, an advanced boron-doped emitter, cutting-edge light trapping and sophisticated fine line printing technologies, Trinasolar achieved the front-side efficiency figure of 25.9%.

Dr Chen Yifeng, Vice President at Trinasolar, said: “We are thrilled to announce this latest achievement by our research team. This milestone not only sets a new world record for large-area TOPCon cells, but also breaks the record for n-type TOPCon cells created and maintained by Fraunhofer ISE since 2017.

“TOPCon is now the dominant technology in the PV industry, thanks to its high level of industrialisation, higher value to customers, and lower cost. The Trinasolar research team’s latest accomplishment further underscores the vast potential of TOPCon technology for the future.”

As an early mover in the realm of n-type technology, Trinasolar began research and development of TOPCon cells in 2015, and is a leading player in the industrial application of i-TOPCon technology. The company holds more than 500 TOPCon patents as of July 2024, placing it among the top global companies in this field. Trinasolar remains fully committed to further developing TOPCon technology, and showcasing its resilience and leadership in this area.