Overview
- University of Stuttgart researchers embedded light‑switchable molecules at grain boundaries to dynamically buffer stress, retaining over 95% performance after two hours of UV at 65°C and 600 thermal cycles from −40°C to +85°C with roughly 27% efficiency.
- QIBEBT engineered a confined 2D/3D perovskite heterojunction at the buried interface using a solid‑state ligand‑exchange on SnO2‑TGA‑OAm, reducing buried‑interface defects by more than 90%.
- Small‑area cells with the engineered buried interface achieved 26.19% efficiency, demonstrating strong device‑level performance.
- A 21.54 cm² perovskite module reached 23.44% efficiency and earned a certified result of 22.68%, while a larger 64.80 cm² module delivered 22.22%, indicating scalability.
- Both advances, published in Nature Energy, pair high efficiency with improved operational robustness, which the teams say moves perovskite photovoltaics closer to commercialization.