Thanks to Trinasolar, a new bifacial TOPCon solar cell with an industrial area of 350.4 cm² and an efficiency of 26.58% has been developed.
Trinasolar Sets a New World Record for the 28th Time with a Bifacial TOPCon Solar Cell
TOPCon photovoltaic technology has a new milestone to celebrate. Trinasolar has achieved this with a new bifacial solar cell boasting an industrial area of 350.4 cm² and the ability to convert 26.58% of incident light into electricity—the highest efficiency ever recorded for its category. This breakthrough comes just a month after the company’s previous technological record.
“We are pleased to announce the extraordinary achievement of our research team,” said Gao Jifan, Chairman and CEO of Trinasolar. “This demonstrates the strong technical potential of TOPCon solar cells.”
The New Bifacial TOPCon Solar Cell
This technology, now dominant in the silicon photovoltaic module industry due to its high level of industrialization and lower cost, continues to set record after record. Most importantly, it is paving the way for greater adoption of bifacial solar modules in the market.
The new Trinasolar cell utilizes a rectangular wafer design—first developed by the Chinese company itself—made of phosphorus-doped n-type monocrystalline Czochralski silicon. By integrating a tunnel oxide passivating contact, an advanced boron-doped emitter, light trapping, and ultra-fine line printing technologies, the i-TOPCon solar cell achieves a front-side efficiency of 26.58%. This achievement was independently certified by the Calibration Testing Center of the Institute for Solar Energy Research in Hamelin (ISFH CalTeC) in Germany.
“We will continue to invest in the R&D of TOPCon solar cells and modules, making the technology more competitive while strengthening intellectual property protection and maintaining our technological leadership,” added Gao Jifan.
Breaking Records in Rapid Succession
This latest milestone follows just a month after Trinasolar’s previous record. The bifacial i-TOPCon solar cell with a 210 × 182 mm² industrial-size surface area had achieved a conversion efficiency of 25.9%, surpassing the historic result held by the Fraunhofer ISE.
