Korean researchers set world record for perovskite-CIGS tandem solar cell efficiency at 26.7%

South Korean scientists have achieved a new efficiency record for small-scale perovskite-CIGS tandem solar cells, with results verified by Fraunhofer ISE and recognized by the U.S. Department of Energy's lab.

First covered Sep 1, 2026 · 10:46 PM PT · 1 article · no longer in the live window

Korean researchers set world record for perovskite-CIGS tandem solar cell efficiency at 26.7% — Image via pv-magazine.com

Coverage

25d PV Magazine Korean researchers achieve world-record 26.7% efficiency for sub-1 cm² perovskite-CIGS tandem solar cell — The result was confirmed by Germany's Fraunhofer Institute for Solar Energy Systems (Fraunhofer ISE) and included in the Best Research-Cell Efficiency Chart…

Primary sources

nrel.gov Interactive Cell Efficiency (nrel.gov)

More coverage from around the web

optica-opn.org Optics & Photonics News - Record-Breaking Tandem Solar Cells

interestingengineering.com Scientists hit 23.64% efficiency with lift-off perovskite tandem solar cell

pv-magazine-australia.com Korean researchers achieve world record efficiency of 23.64% for flexible perovskite-CIGS tandem solar cell – pv magazine Australia

sciencedirect.com 29.9%-efficient, commercially viable perovskite/CuInSe2 thin-film tandem solar cells - ScienceDirect

perovskite-info.com Researchers report flexible and lightweight perovskite/CIGS tandem solar cells with 23.64% efficiency | Perovskite-Info

Appeared in: 2026-09-02 (#6)

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