4G32-Advanced Quadruple-Junction Space Solar Cell
Azur Space Solar Power
AZUR SPACE's flagship 32%-class quadruple-junction GaAs-based space solar cell, offering best-in-class beginning-of-life and end-of-life power output for satellite power systems.
Technical specifications
- Cell type
- AlInGaP/AlInGaAs/InGaAs/Ge on Ge substrate, upright metamorphic quadruple-junction
- Efficiency class
- 32% (BOL, AM0)
- EOL efficiency
- Up to 28.5% (1E15 cm⁻² 1 MeV electron fluence, AM0)
- Junctions
- 4 (quadruple-junction)
- Substrate size options
- 100 mm or 150 mm
- Form factor
- Bare cell with welding pads; also available as CIC assemblies and SMT variant
- Technology readiness level
- Orbit TRL-9 (flight-proven)
- Flight heritage / applications
- AZUR SPACE cell heritage across GEO telecom, LEO constellation, navigation and Earth observation programs including Intelsat, Globalstar, Hotbird, Galileo, Meteosat, Glonass, GMES/Copernicus, and OneWeb
About
The 4G32-Advanced (also designated 4G32C-Advanced) is AZUR SPACE Solar Power GmbH’s flagship space solar cell, built as an AlInGaP/AlInGaAs/InGaAs/Ge upright metamorphic quadruple-junction device grown on a germanium substrate. It was the first metamorphic four-junction cell brought to market for GEO applications, delivering 32%-class beginning-of-life efficiency at AM0 conditions and industry-leading end-of-life performance after radiation exposure. The cell incorporates AZUR SPACE’s proprietary radiation-hardened design, giving it exceptionally high voltage and best-in-class power-per-mass and price-per-watt at end-of-life. It is supplied as a bare cell (100 mm or 150 mm substrates) with welding pads for interconnect attachment, and is also offered as coverglass-interconnected cell assemblies and, through partner Sierra Space, in a surface-mount configuration. Targeted at satellite manufacturers needing maximum power density on small array areas and low mass, the 4G32 product line carries orbit TRL-9 flight heritage, building on AZUR SPACE’s decades-long track record supplying cells for GEO telecom satellites, LEO constellations, and Earth observation/navigation missions such as Intelsat, Globalstar, Hotbird, Galileo, Meteosat, Glonass, GMES/Copernicus, and OneWeb spacecraft.
Documentation
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