Wedoany.com Report on Mar 6th, Chinese battery manufacturer Maxwell has recently achieved a new breakthrough in photovoltaic technology, successfully developing a perovskite/silicon heterojunction technology tandem solar cell with a certified conversion efficiency of 32.5%. This perovskite/silicon HJT cell was fabricated in February this year, adopting the G12H industrial standard size. Its efficiency has improved from 32.38% at the beginning of the year, and the relevant data has been verified by Germany's Fraunhofer Institute for Solar Energy Systems.

Maxwell stated that the cell is based on an industrial-grade 110-micron-thick silicon wafer, utilizing advanced perovskite passivation technology and innovative low-damage TCO materials with supporting processes. The R&D team placed significant emphasis on industrial scalability in the design, laying the groundwork for subsequent large-scale mass production. This efficiency breakthrough indicates that perovskite/silicon HJT cell technology is transitioning from the laboratory to industrial application.

While making continuous progress in the field of perovskite/silicon HJT cells, Maxwell is also actively advancing its commercial layout. Previously, in December 2025, the company signed a supply contract with a Chinese new energy company to support the customer in establishing a large-scale production line for G12H full-size tandem cells. This collaboration signifies that Maxwell's perovskite/silicon HJT cell technology is gradually maturing and gaining market recognition.

Furthermore, Maxwell maintains R&D investment in other solar cell technology pathways. Last month, Germany's Institute for Solar Energy Research Hamelin verified another HJT cell developed by the company, achieving an efficiency of 26.92%. This cell shares the same size as the perovskite/silicon HJT cell but differs in material composition, reflecting the company's comprehensive layout across different technological directions.