New efficiency record for CIGS perovskite tandem cells
Researchers from HZB and Humboldt University Berlin have presented a CIGS-perovskite tandem cell that sets a new world record with an efficiency of 24.6 percent, certified by the independent Fraunhofer Institute for Solar Energy Systems.
The efficiency of the tandem solar cell (which combines a bottom cell made of CIGS with a top cell based on perovskite) was achieved by improving the contact layers between the two cells.
"At HZB, we have highly specialised laboratories and experts who are top performers in their fields. With this world record tandem cell, they have once again shown how fruitfully they work together,' says Rutger Schlatmann, spokesman for the Solar Energy Department at HZB. "We are confident that CIGS-perovskite tandem cells can achieve much higher efficiencies, probably more than 30 percent."
HZB teams have achieved world record values for tandem solar cells several times, most recently for silicon-perovskite tandem solar cells, but also with the combination CIGS-perovskite.
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