A new record in solar cell efficiency has been set by a team from the University of Queensland , which has managed to optimize solar energy conversion using a lead-free perovskite -based technology.
Tin halide perovskite, the alternative in solar cells
The group led by Professor Lianzhou Wang has developed a tin halide (THP) solar cell that achieves a certified efficiency of 16.65%. This figure exceeds the previous record in this category by almost one percentage point, positioning THP technology as a competitive option compared to traditional silicon solar cells. In addition to its performance, it stands out for its lower environmental impact thanks to the replacement of lead with tin, a safer and more sustainable element.
One of the key factors in this breakthrough was the incorporation of cesium ions, which improved the microstructure of the thin films used in solar cells. This helped reduce structural defects and increase the material’s stability. According to Dr. Peng Chen, this modification was crucial in overcoming previous limits and meeting rigorous environmental standards.
The efficiency achieved by the UQ team is within the range of many silicon cells on the market today, with the advantage of being faster and cheaper to produce. According to Dr. Dongxu He, this technology could transform the solar panel market, making them easier to install in domestic and industrial settings without the risks associated with lead.
The potential of THP cells is not limited to the energy sector. The same technical approach could be applied to optoelectronic devices such as lasers, photodetectors, and transistors. Their use is even being considered in power solutions for electric aircraft, opening up new possibilities for future lightweight engineering.
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Source and photo: UQ News
