Compare · Solar cells
4-junction III-V concentrator vs Single-junction GaAs
RANKED BY INDEPENDENTLY CERTIFIED RESEARCH-CELL EFFICIENCY
#1 VS #5
CHECKED 06 SEPT 2026
Side by side
Verdict
4-junction III-V concentrator ranks #1 of 8 on Independently certified research-cell efficiency (47.6%); Single-junction GaAs ranks #5 (29.1%).
Rank 01 of 8 · leads
Independently certified research-cell efficiency
47.6%
MakerFraunhofer ISE
Date2022
Verified04 Sept 2026
Evidence
Fraunhofer ISE press release 30 May 2022: four-junction cell reached 47.6% at 665 suns, CalLab measurement. Same figure is the top flag on NREL/NLR Best Research-Cell Efficiency Chart PDF Rev. 05-12-2026. Concentrator result — not a one-sun flat-plate cell.Rank 05 of 8
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.Try another pair
More 4-junction III-V concentrator matchups
- 4-junction III-V concentrator vs 6-junction III-V concentrator
- 4-junction III-V concentrator vs III-V triple-junction (one-sun)
- 4-junction III-V concentrator vs Perovskite/silicon tandem (two-terminal)
- 4-junction III-V concentrator vs Crystalline silicon HIBC
- 4-junction III-V concentrator vs CIGS thin film
- 4-junction III-V concentrator vs CdTe thin film
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