Our Tandem cell reached a new goal: 30.8% efficiency
Another step further in the photovoltaic market evolution
2025 begins with a goal that strengthens 3SUN’s role in the energy transition, by achieving 30.8% efficiency on a perovskite-silicon tandem cell. Apart from its technological importance, this result is a leap into a new generation of technologies that can pave the way to increasingly efficient and competitive solar systems.
Once again, our research team - with the help of the CEA squad at the French National Institute for Solar Energy (INES) - managed to improve the energy conversion efficiency of this innovation technology, bringing it to 30.8% in a 9 cm² cell. Differently from other global records, which refer to small cells (1 cm² at most), this proves how our technology is reliable and mature to be industrialized on a large scale.
Why is this record so important?
A higher efficiency generates more power within the same surface, without requiring updates on existing plants. And this milestone also translates in LCOE (Levelised Cost of Energy) advantages, with lower overall costs and higher productivity, benefiting both providers and end consumers.
A goal to celebrate a decade of innovations
“This result represents a significant advancement towards the large-scale production of Tandem solar cells. These cells, thanks to their high performance, are poised to replace traditional silicon-only solar cells. In the upcoming years, this technology is expected to become the standard in the photovoltaic sector, overcoming the limitations of silicon cells.” Stated Cosimo Gerardi, Chief Technology Officer of 3SUN, emphasizing that “this technological progress is crucial for maintaining European competitiveness and promoting a more sustainable future.”
This success celebrates our tenth anniversary of the strategic partnership with CEA, at INES (French National Institute for Solar Energy). This partnership bears witness to our commitment to developing the perovskite-silicon tandem technology - a pioneering solution that adopts a two-terminal PIN architecture, designed to bring the European photovoltaic sector to new standards of excellence.
We are undertaking a new journey where Sicily can be the centre of the European solar revolution that will change the way solar energy is perceived. Every step of this evolution is a fundamental passage toward a more sustainable and innovative energy system, with very promising developments.