Trinasolar says its 31.1% efficiency feat is the 1st time for a 2-terminal perovskite-silicon tandem based on a 210 mm industrial-grade cell to have exceeded 31% efficiency
Efficiency, as claimed by the company’s National Key Laboratory of Photovoltaic Science and Technology, has been validated by Fraunhofer ISE
It is the company’s 2nd achievement within a month in the tandem space, after announcing an 800 W+ tandem module, certified by TÜV SÜD
Chinese solar PV and energy storage company Trinasolar has announced a ‘new world record’ power conversion efficiency of 31.1% for its self-developed perovskite-crystalline silicon 2-terminal tandem solar cell.
CalLab at Germany’s Fraunhofer Institute for Solar Energy has independently certified the claim, according to the manufacturer. Trinasolar says this is the 1st time that the cell efficiency for a large-area industrial-grade cell size has exceeded 31%.
It achieved the efficiency on a large-area tandem solar cell that’s based on the company’s proprietary 210 × 105 mm² crystalline silicon cell structure as the bottom cell.
The company’s R&D team worked on large-area film formation of suede-based perovskite, top and bottom cell matching, and interface passivation to reduce energy loss, explained Trinasolar. It has previously achieved 34.2% efficiency for a small area tandem cell in 2024.
Of late, Trinasolar has trained its lens on perovskite silicon tandem as the next-generation technology and is gearing up for its industrialization since perovskites offer several versatile application scenarios.
Recently, the Chinese manufacturer developed what it termed is the world’s first industrial-standard solar PV module with perovskite-silicon tandem solar cells with 808 W of maximum power. It has also signed an exclusive patent licensing agreement with Oxford PV for the manufacture and/or sale of perovskite-based PV products in China (see Oxford PV & Trinasolar Enter Exclusive Patent Partnership).
According to the 16th edition of the International Technology Roadmap for Photovoltaics (ITRPV), the tandem solar silicon solar cells expected to enter mas production 2026, earning a market share of 3% by 2029.
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