China-based PV equipment supplier Suzhou Maxwell Technologies Co., Ltd. has announced that it has achieved an energy conversion efficiency of 26.92% for a heterojunction (HJT) solar cell.
The result was independently certified by the Institute for Solar Energy Research Hamelin (ISFH) in Germany.
The cell also recorded an open-circuit voltage of 951.7 mV, a short-circuit current of 9.112 mA and a fill factor of 86.75%.
Maxwell said the device is a full-area cell, based on a half-cell size of 210 mm, with an active area of 220.76 cm². It was manufactured using the company’s in-house HJT production line equipment and an end-to-end process flow.
According to Maxwell, the cell uses industrial-grade silicon wafers and screen printing electrodes, and features bilateral microcrystalline layer engineering, differentiated surface texturing and wafer edge optimization. These measures are intended to reduce interfacial recombination losses, improve carrier transport and passivation balance, and reduce optical and edge-related losses, while maintaining manufacturability, the company said.
The company noted that this result builds on the previous HJT cell efficiency of 26.8% announced in November 2025, representing a 0.12 percentage point improvement in just over two months, although no additional technical details were provided.
Currently, Longi holds the world record for HJT cell efficiency with a 27.3% efficient device unveiled in November 2024 that has a back-contact (BC) configuration. For HJT cells without BC architecture, the world record is held by Trina Solar, whose device achieved an efficiency of 27.08% in December 2024.
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