Longi(SH:601012) Ge Long Hui·2025-12-31 08:08Core Viewpoint - Longi Green Energy (601012.SH) has made significant advancements in silicon-based tandem solar cell research, achieving high efficiency levels, but faces challenges in production costs and product stability that hinder mass production [1] Group 1: Research Achievements - In November 2025, a study published in Nature, in collaboration with Suzhou University and Xi'an Jiaotong University, reported that the efficiency of small-area ultra-thin silicon-perovskite tandem solar cells reached 33.4%, certified by the National Renewable Energy Laboratory (NREL) [1] - The efficiency of commercially sized flexible tandem solar cells was certified at 29.8% by the Fraunhofer Institute for Solar Energy Systems [1] Group 2: Industry Challenges - Despite progress in perovskite tandem solar cells, production costs and product stability remain significant factors affecting the economic viability of mass production [1] - The company currently has no plans for mass production of perovskite tandem solar cells but will continue to focus on the technology and its industrialization research [1]