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III-V triple-junction (one-sun) vs Single-junction GaAs

RANKED BY INDEPENDENTLY CERTIFIED RESEARCH-CELL EFFICIENCY #3 VS #5 CHECKED 06 SEPT 2026

Side by side

Verdict

III-V triple-junction (one-sun) ranks #3 of 8 on Independently certified research-cell efficiency (39.5%); Single-junction GaAs ranks #5 (29.1%).

Rank 03 of 8 · leads

III-V triple-junction (one-sun)

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 05 of 8

Single-junction GaAs

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.

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More III-V triple-junction (one-sun) matchups

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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