German researchers achieve 25.5% efficiency record for perovskite-CIGS tandem solar cell

Researchers from HZB and Humboldt-Universität in Berlin have achieved a record 25.5% conversion efficiency in a CIGS-perovskite tandem PV cell.

First covered Jul 1, 2026 · 12:51 AM PT · 2 articles

Coverage

5h PV Tech Record 25.5% efficiency for CIGS-perovskite tandem solar cell — Researchers from HZB and Humboldt-Universität in Berlin have achieved a record 25.5% conversion efficiency in a CIGS-perovskite tandem PV cell.

8h PV Magazine German researchers achieve world record 25.5% efficiency for perovskite-CIGS tandem solar cell — The result was confirmed by the European Solar Test Installation (ESTI). The post German researchers achieve world record 25.5% efficiency for perovskite-CIGS…

Appeared in: 2026-07-01 (#1)

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