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6-junction III-V concentrator vs III-V triple-junction (one-sun)

RANKED BY INDEPENDENTLY CERTIFIED RESEARCH-CELL EFFICIENCY #2 VS #3 CHECKED 06 SEPT 2026
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Verdict

6-junction III-V concentrator ranks #2 of 8 on Independently certified research-cell efficiency (47.1%); III-V triple-junction (one-sun) ranks #3 (39.5%).

Rank 02 of 8 · leads
Independently certified research-cell efficiency
47.1%
MakerNREL
Date2020
Verified04 Sept 2026
Evidence
NREL press release 13 Apr 2020 and Nature Energy paper: monolithic six-junction inverted metamorphic cell 47.1% under 143 suns.
Rank 03 of 8
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.
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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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