University of Queensland sets record for tin perovskite solar cell

Tin halide perovskite solar cells at University of Queensland reached 16.65% efficiency using caesium-enhanced thin films to surpass previous records.

By Prudhvi Rani 19 Apr 2025 in Australia Bytes Tech Bytes

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THP design used eco-friendly tin and caesium ions, which improved microstructure and reduced defects in the solar cell film. Image Source: The University of Queensland

The University of Queensland researchers achieved a certified world record of 16.65% efficiency for tin halide perovskite (THP) solar cells. Led by Professor Lianzhou Wang, the team improved performance using methods inspired by their 2020 quantum dot solar cell research. The new THP design replaced toxic lead with eco-friendly tin and incorporated caesium ions to enhance film quality and reduce defects. The team worked across the Australian Institute for Bioengineering and Nanotechnology and the School of Chemical Engineering. Dr Peng Chen confirmed that caesium ions improved the THP film’s microstructure. Dr Dongxu He highlighted the sustainability advantages of THP cells. Professor Wang stated the results placed THP solar cells in line with some commercial silicon-based cells, with potential for broader use in solar panels and optoelectronic devices.

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