[SMM PV] Photoelectric conversion efficiency reached a record-breaking 26.2%! China successfully developed a large-area all-perovskite tandem PV module.

Published: Jun 17, 2026 09:22

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Fast Technology, June 17 news: According to media reports, the team of Tan Hairen from Nanjing University, together with Renshuo Solar Energy (Suzhou) Co., Ltd., has achieved an important breakthrough in the field of all-perovskite tandem PV technology.

The research team successfully fabricated a large-area all-perovskite tandem PV module, which was certified by the Japan Electrical Safety & Environment Technology Laboratories (JET) with a photoelectric conversion efficiency as high as 26.2%, setting a new world record for all-perovskite tandem modules of the same area class.

The module has an area of 65 square centimeters and adopts a tunneling recombination junction structure without a hole transport layer. The team innovatively replaced the traditional ultra-thin metal composite layer with a nanocrystalline functional layer, and removed the PEDOT:PSS hole transport layer, achieving structural reconstruction of the interface connection layer.

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