Tandem Perovskite-Silicon: Enel Green Power and CEA improve their efficiency record to 27.1% on 9 cm²

Research and innovation
Published on 06/09/2023

The CEA at INES, ENEL Green Power and its Sicilian subsidiary 3SUN, are developing the two-terminal perovskite-silicon tandem technology to achieve the highest efficiencies that can be industrialized as quickly as possible. They have just achieved a new record for a PIN architecture cell, with a conversion efficiency of 27.1% over 9 cm² with shading correction.

Improvements to the technology are proceeding at an impressive pace. The CEA and 3SUN had already presented first-class results in April 2022 with 24.9%, then in December 2022 with 25.8% and 26.5% in March 2023, for the same PIN architecture tandem cell on 9cm² with shading correction.
The 9 cm² device has a Voc above 1900 mV. 
The race for PIN-architecture Si/PK tandem cells with efficiencies over 30% on large surfaces is in full gear. The teams look forward to presenting further exciting results.

Stay tuned!

What's all this excitement about Perovskite tandem cells on silicon? Reminder:

Perovskite (PK) materials have been shaking up the solar scientific and industrial community since the discovery of their photovoltaic properties in 2012. These materials represent an opportunity for a major technological breakthrough, opening the way for photovoltaic cells to achieve conversion efficiencies above 30%, with little additional cost, by combining them with a lower band-gap material such as silicon (Si). Scientific and technical progress is rapid in this field, with a certified world record currently held by KAUST Solar Center at 33.7% over 1 cm2 and announced by Stefaan de Wolf this 6th of June during the Tandem Workshop 2023 in Chambéry Savoie.

Credits: Copyright : D. Cherpin CEA
Photo of a PIN Tandem Si/PK cell measuring 5x5 cm - 9 cm² active area
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