HZB scientists announce 24.16% efficiency for tandem CIGS solar cell

The Fraunhofer Institute for Solar Energy Systems' (ISE) CalLab has confirmed the new efficiency rating. The researchers have combined semiconductors, perovskites and CIGS to produce a monolithic two-terminal tandem cell.Scientists from Helmholtz-Zentrum Berlin (HZB) have revealed that they have achieved an efficiency of 24.16% with a tandem cell combining CIGS and perovskite technology. The result, which has been confirmed by the Fraunhofer Institute for Solar Energy Systems's (ISE) CalLab, was obtained with a tandem cell measuring 1cm². The new design improves upon HZB's previous record of ...

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