We are pleased to announce that our RISE young star Prof. Guang YANG, Member Assistant Professor of the Department of Electrical and Electronic Engineering (EEE), collaborating with Prof. Jinsong HUANG's team at the University of North Carolina at Chapel Hill, published groundbreaking research titled "Reductive cation for scalable wide-bandgap perovskite solar cells in ambient air" in Nature Sustainability.
The team innovatively incorporated a reductive methylhydrazinium cation (Mhy+) into wide-bandgap perovskite materials, enabling scalable fabrication of solar cells in ambient conditions. Key highlights:
Material Improvement: Mhy+ significantly reduces defect density while suppressing iodide oxidation and halide demixing, leading to enhanced efficiency and stable production of wide-bandgap solar cells in ambient air conditions.
Performance Breakthrough: Achieved 23.3% power conversion efficiency (PCE), 1.28 V open-circuit voltage, and just 0.37 V voltage loss, setting new records. Successfully fabricated 25 cm² mini-modules with 19.8% efficiency.
Stability Enhancement: Under accelerated aging conditions at 55±5°C, the mini-modules maintained 94% of their initial efficiency after 700 hours of light soaking, demonstrating exceptional long-term stability.
This research not only addresses the technical challenges of scalable fabrication but also provides a viable pathway for the sustainable use of solar energy, paving the way for future innovations in the field.
Read the full paper: https://www.nature.com/articles/s41893-025-01529-5
Material Improvement: Mhy+ significantly reduces defect density while suppressing iodide oxidation and halide demixing, leading to enhanced efficiency and stable production of wide-bandgap solar cells in ambient air conditions.
Performance Breakthrough: Achieved 23.3% power conversion efficiency (PCE), 1.28 V open-circuit voltage, and just 0.37 V voltage loss, setting new records. Successfully fabricated 25 cm² mini-modules with 19.8% efficiency.
Stability Enhancement: Under accelerated aging conditions at 55±5°C, the mini-modules maintained 94% of their initial efficiency after 700 hours of light soaking, demonstrating exceptional long-term stability.
This research not only addresses the technical challenges of scalable fabrication but also provides a viable pathway for the sustainable use of solar energy, paving the way for future innovations in the field.
Read the full paper: https://www.nature.com/articles/s41893-025-01529-5
| Research Units | Otto Poon Charitable Foundation Research Institute for Smart Energy |
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