Tandem Si/PK cell with PIN architecture of 5x5 cm - 9 cm² active surface
Crédits : CEA

Enel Green Power and CEA are back with a record efficiency of 26.5% on 9 cm²

Research and innovation

Published on 03/15/2023

CEA at INES, ENEL Green Power and its subsidiary 3SUN of Catania, are developing the tandem perovskite-silicon technology with two terminals to reach the highest industrially feasible efficiencies as soon as possible.

Their new record obtained for a PIN architecture cell is a conversion efficiency of 26.5% on 9 cm² with shading correction.

The device with an active area of 9 cm² has a Voc above 1880 mV.

Earlier records had been reached in April 2022 with 24,9%, then in December 2022 with 25.8% still with a tandem cell of PIN architecture on 9 cm² and with shading correction.

The race towards higher efficiency (>30%) Si/PK tandem cells with PIN architecture, on large surfaces and on their manufacturing processes, is going on...

Tandem Si/PK cell with PIN architecture of 5x5 cm - 9 cm² active surface

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Perovskite (PK) materials have been agitating the solar scientific and industrial community since the discovery of their photovoltaic properties in 2012. These materials represent an opportunity for a major technological leap forward by paving the way for photovoltaic cells to achieve conversion efficiencies of more than 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 HZB with 32.5% on 1 cm2 (https://www.helmholtz-berlin.de/pubbin/news_seite?nid=24348;sprache=en ).

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