Changzhou, China, April 10, 2025- Trinasolar’s State Key Laboratory of PV Science and Technology (SKL PVST) announced a new world record in perovskite-silicon tandem technology. The company’s self-developed large-area 210mm perovskite/crystalline silicon two-terminal tandem solar cell has achieved a certified maximum efficiency of 31.1%, as independently confirmed by the photovoltaic calibration laboratory at the Fraunhofer ISE (CalLab) in Germany. This achievement sets a new global benchmark for large-area tandem solar cell efficiency, and marks the first time a 210mm industrial-grade cell has exceeded the 31% efficiency threshold. It is also the 32nd time Trinasolar has either set or broken a world record, underscoring the company's leadership in advancing perovskite-silicon tandem technology from cell-level efficiency breakthroughs to module-level power gains.

       This breakthrough is based on Trina's 210×105 mm² large-area 210mm half-cell industrial crystalline silicon bottom cell for tandem cell fabrication. By employing a fully scalable production process, the team addressed key challenges such as the growth of large-area perovskite on textured surface, light trapping matching for both top and bottom cells, interface and surface passivation, and resistive loss reduction. It marks a major leap following the company's 2024 achievement of 34.2% efficiency on small-area tandem cells.

       For over a decade, Trinasolar has focused on pushing the upper limits of crystalline silicon conversion efficiency, accelerating the industrialization of next-generation solar cell technologies, with perovskite as a key representative. The theoretical efficiency limit of crystalline silicon—around 30%—represents a clear boundary for single-junction cells. In contrast, perovskite tandem cells, with a theoretical efficiency of over 43%, can break through this barrier and have far greater potential for improvement. Moreover, perovskite technology enables a broader range of applications, including BIPV (Building-Integrated Photovoltaics), BAPV (Building-Applied Photovoltaics), and BTPV (Building Technology Photovoltaics).

       Tandem technology that breaks through the limits of single-junction silicon cells represents a key pathway toward the next stage of development. “By focusing on scalable, large-area processes, we have developed the world’s largest industrial-grade tandem cell,” said Gao Jifan, Chairman and CEO of Trinasolar and Director of the State Key Laboratory of PV Science and Technology. “This marks another breakthrough for Trinasolar in perovskite-silicon tandem technology, after we set a new industry benchmark last month with the world’s first industrial-standard PV module that exceeded the 800W power threshold. we are confident in achieving further breakthroughs in tandem cell technology and leading the industrialization of this ultra-high-efficiency solar cell technology in the future.”

Company：Trinasolar

Contact person：Liuyuan

E-mail：472085068@qq.com

City: Shanghai

Website: https://www.trinasolar.com/cn