In a recent study published in Nano-Micro Letters , a collaboration led by Prof. Wenming Tian and Prof. Shengye Jin (Dalian Institute of Chemical Physics, CAS) and Prof. Yantao Shi (Dalian University of Technology) challenges the long-held belief that grain boundaries (GBs) in perovskite solar cells (PSCs) are detrimental to performance. Using operando, sub-micrometer imaging, the team reveals that GBs in high-efficiency devices can act as charge-separation “highways,” boosting photocurrent and aiding carrier extraction.
Why This Research Matters
Innovative Design and Mechanisms
Applications and Future Outlook
By reframing grain boundaries from a problem to a design opportunity, this work provides a new direction for advancing perovskite photovoltaics toward higher efficiency and stability.
Nano-Micro Letters
Experimental study
Grain Boundaries Contribute to the Performance of Perovskite Solar Cells by Promoting Charge Separations
4-Jun-2025