Enel Green Power and CEA/3SUN achieve 28.4% efficiency for a 9 cm² tandem perovskite/silicon cell

The CEA at INES, ENEL Green Power and its Sicilian affiliate 3SUN have announced a new record for a PIN architecture two-terminal perovskite-silicon tandem cell with a conversion efficiency of 28.4% on 9 cm² with shading correction.

In 2023, the CEA and 3SUN have previously announced 26.5% in March, and 27.1% in June for the same type of PIN architecture tandem cell on 9cm² with shading correction. The year closes on a high note for the team, with this cell, certified by the European Commission JRC-ESTI at a conversion efficiency 24.4% equivalent to 28.4% with shading correction. Like the previous performance record, the device has an active surface area of ~ 9 cm² and a Voc of over 1900 mV.


Most of the efficiency records published internationally are for surfaces of 1cm². The team's researchers are focused on simultaneously seeking the best efficiency and stability over time, on larger surfaces, to demonstrate the feasibility of industrialization as soon as possible.

Enel Green Power has chosen an n-type heterojunction (HJT) cell with an efficiency of 25.5% for its new 3 GW solar module factory currently under construction in Catania, southern Italy. It recently said this could result in module efficiencies above 24%. From 2026, Enel Green Power plans to offer even more efficient solar modules based on tandem silicon-perovskite cells. The final products will reportedly reach efficiencies of around 30%.

Posted: Dec 20,2023 by Roni Peleg