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III-V triple-junction (one-sun) vs CdTe thin film

RANKED BY INDEPENDENTLY CERTIFIED RESEARCH-CELL EFFICIENCY #3 VS #8 CHECKED 06 SEPT 2026
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Verdict

III-V triple-junction (one-sun) ranks #3 of 8 on Independently certified research-cell efficiency (39.5%); CdTe thin film ranks #8 (23.1%).

Rank 03 of 8 · leads
Independently certified research-cell efficiency
39.5%
MakerNREL
Date2022
Verified04 Sept 2026
Evidence
NREL 19 May 2022 / Joule: triple-junction IMM cell 39.5% under one-sun global illumination — the NREL-chart one-sun III-V flag.
Rank 08 of 8
Independently certified research-cell efficiency
23.1%
MakerFirst Solar
Date2024
Verified04 Sept 2026
Evidence
Solar cell efficiency tables (Version 68): CdTe cell 23.1% +/- 0.3%, NREL (5/24), First Solar. Same official-table pipeline as the NREL Best Research-Cell Efficiency Chart. Thin-film class, one-sun.
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Source NREL/NLR Best Research-Cell Efficiency Chart, certifying-lab announcements (Fraunhofer ISE, NREL, LONGi/ESTI/ISFH), and Progress in… Last checked 06 Sept 2026
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