Collaborative Team Achieves Record Efficiencies in Silicon-Based Tandem Cells

Published: Nov 17, 2025 09:24

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On 10 November 2025, Nature published online a significant advancement in silicon-based tandem cell research by a collaborative team from LONGi Green Energy Technology, Soochow University, Xi'an Jiaotong University and other institutions. The team's ultra-thin crystalline silicon-perovskite tandem cell achieved a small-area device efficiency of 33.4%, certified by the National Renewable Energy Laboratory (NREL). while the efficiency of a commercial-scale flexible tandem cell at wafer level was certified by Germany's Fraunhofer Institute for Solar Energy Systems (ISE) at 29.8%.

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