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Single-junction GaAs vs CIGS thin film

RANKED BY INDEPENDENTLY CERTIFIED RESEARCH-CELL EFFICIENCY #5 VS #7 CHECKED 06 SEPT 2026
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Verdict

Single-junction GaAs ranks #5 of 8 on Independently certified research-cell efficiency (29.1%); CIGS thin film ranks #7 (23.35%).

Rank 05 of 8 · leads
Independently certified research-cell efficiency
29.1%
MakerAlta Devices
Date2018
Verified04 Sept 2026
Evidence
NREL chart flag for single-junction GaAs: 29.1%, Fraunhofer ISE Oct 2018 (Progress in Photovoltaics tables). One-sun.
Rank 07 of 8
Independently certified research-cell efficiency
23.35%
MakerSolar Frontier
Date2018
Verified04 Sept 2026
Evidence
NREL chart / Progress in Photovoltaics tables: Cd-free CIGS 23.35% +/- 0.5%, AIST Nov 2018, Solar Frontier.
Try another pair
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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