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Going green with fluoride-enhanced perovskite solar cells

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April 15, 2025
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Going green with fluoride-enhanced perovskite solar cells

by Simon Mansfield

Sydney, Australia (SPX) Apr 15, 2025






A team of scientists from Queensland University of Technology (QUT) has unveiled a sustainable method for fabricating perovskite solar cells (PSCs) by using a fluoride-based additive in a water-only solution. This innovation replaces hazardous solvents typically used in PSC production, achieving a notable power conversion efficiency exceeding 18%.



Perovskite solar cells have emerged as a promising technology for the future of solar energy, thanks to their high efficiency and cost-effectiveness. Yet, their commercial scalability has been hindered by the environmental and health hazards posed by conventional toxic solvents used during manufacturing. While water-based methods offer a more sustainable route, they have so far underperformed in delivering high-efficiency devices.



To overcome this barrier, QUT researchers introduced lead(II) fluoride (PbF2) into the aqueous precursor mix. This additive plays a dual role: it speeds up the formation of the light-absorbing phase and aligns the crystallization process to optimize light conversion. The fluoride ions also passivate surface defects in the perovskite grains, minimizing charge loss and improving conductivity.



“With the PbF2 additive, we achieved a power conversion efficiency of 18.1%, compared to 16.3% in the control device,” said Dr. Minh Tam Hoang, a postdoctoral researcher at QUT and lead author of the study. “Even more exciting is the improved operational and environmental stability, which brings us closer to scalable, green manufacturing of PSCs.”



This advancement signals a meaningful shift in perovskite solar cell development, offering a pathway to produce efficient and durable solar modules through eco-friendly processes. The results demonstrate the value of fluoride-based chemistry in advancing both performance and sustainability in solar technologies.



The findings were published in the journal Materials Futures, underscoring the growing role of green additives in next-generation clean energy solutions.



Research Report:Lead (II) fluoride additive modulating grains growth of water-processed metal halide perovskites for enhanced efficiency in solar cells


Related Links

Songshan Lake Materials Laboratory

All About Solar Energy at SolarDaily.com



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