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.
Recently, Trinasolar has been focusing on perovskite silicon tandems as the next-generation technology of choice and is gearing up for its commercialization
Recently, the Chinese manufacturer developed what it termed as 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.
