➀ Researchers at IIT Dharwad have developed bifacial perovskite solar cells with enhanced efficiency and durability.

➁ The cells incorporate a hybrid three-layer transparent electrode (NiO/Ag/NiO) that allows for high power conversion efficiencies from both sides.

➂ These solar cells exhibit strong near-infrared transparency and maintain 80% of their initial efficiency after over 1,000 hours of operation without encapsulation.

Fraunhofer FEP is developing new optically effective surface structures for perovskite solar cells using roll-to-roll nanoimprint lithography (NIL) to minimize reflection losses and increase efficiency. The project Design-PV aims to integrate PV-active facade areas with non-active surfaces seamlessly. NIL technology is also being explored for applications in antifouling, anti-reflective coatings, and medical engineering.

The project PERSEUS is focused on improving the performance of perovskite solar cells with innovative methods, including optimized surface structures. Fraunhofer FEP is working on cost-effective production of these structures using R2R-NIL, targeting indoor and outdoor photovoltaic module applications.

NIL is capable of fabricating surface topographies on polymer films for large-scale production. The technology offers flexibility to integrate various pigments or particles into coatings, and is being developed for applications beyond photovoltaics, such as lab-on-chip structures and battery electrode substrates.

➀ Researchers from Peking University have developed a new method to stabilize perovskite solar cells without common trade-offs.

➁ The method involves an iodine intercalation-declaration strategy, which enhances the efficiency and stability of perovskite solar cells.

➂ Solar cells using this technique achieved over 24% power conversion efficiency and maintained 99% of their original efficiency after 1,100 hours of operation at 85°C.