PVTIME – SolaEon has broken the world record for the photoelectric conversion efficiency of single-junction perovskite solar cells. Its independently developed cell has achieved a conversion efficiency of 27.87%, as certified by the National Photovoltaic Industry Metrology and Testing Centre. This marks the 20th time that the firm has broken this world record since its establishment three years ago.
Every 0.1% increase in efficiency represents a significant technological advancement in photovoltaics. This result shows that perovskite technology is fast approaching its theoretical limit of around 33%, surpassing the 29.43% theoretical ceiling of crystalline silicon cells. This milestone widens the gap with silicon technology and paves the way for all-perovskite tandem cells to surpass 35% conversion efficiency.
SolaEon also has significant reserves in all-perovskite tandem cell technology. In May 2025, the company announced that its all-perovskite tandem solar cell had achieved conversion and steady-state (MPPT) efficiencies of 31.55% and 31.44% respectively, setting new global records and ushering in a new era of high-efficiency perovskite technology.
Notably, it excels in square-metre modules, a key indicator of industrialisation. In June 2025, the National Institute of Metrology in China certified that its 1.2m×0.6m commercial single-junction perovskite module achieved 20.7% efficiency across its full 0.72m² area (149W output) and 21.88% over the 0.64m² illuminated area (140W output). This is the first global perovskite breakthrough above 20% full-area efficiency in square-metre modules. The large-area version outperforms its small-area counterparts with 103.7% efficiency retention, resolving the long-standing industrial bottleneck of scaling efficiency without loss of area.
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