Chinese researchers achieve 29.71% efficiency in perovskite-CIGS tandem solar cells

Researchers in China developed a new four-terminal tandem solar cell using sulfide coordination engineering that achieved record efficiency by improving wide-bandgap perovskite stability.

First covered Jul 30, 2026 · 1:00 AM PT · 1 article

Chinese researchers achieve 29.71% efficiency in perovskite-CIGS tandem solar cells — Image via pv-magazine.com

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1d PV Magazine Chinese researchers build 29.71% perovskite-CIGS tandem solar cell based on sulfide — Researchers in China developed a four-terminal perovskite/CIGS tandem solar cell using bis(2-pyridylmethyl) sulfide (2PyS) coordination engineering to improve…

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Appeared in: 2026-07-31 (#14)

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Chinese researchers achieve 29.71% efficiency in perovskite-CIGS tandem solar cells

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