Photovoltaics
Over 65 years of unmatched heritage
and innovation in space solar cells
Products
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Cells & CICs
Spectrolab offers a range of GaInP/GaAs/Ge lattice matched 3J solar cells with efficiencies reaching 32%. All 3J technologies are fully AIAA S111 and S112 qualified. Spectrolab's space solar cells can be purchased as bare cells or assemblies complete with space-qualified coverglass, bypass diode, and interconnects for welded connections between solar cells (CICs).
NEW XTE Family of Cells
Spectrolab's Industry Leading Technology with 32% efficiency!
- Fully qualified under AIAA-S111-2014 standard
- Industry leading BOL & EOL
- Three 32% efficient cells optimized for unique space missions:
- XTE-SF for GEO and LEO (≤1e15). 27.9% efficiency at 1e15
- XTE-HF for MEO (>1e15). 23.6% efficiency at 1e16
- XTE-LILT for LILT. 37% efficiency at Jupiter conditions
XTJ Prime
Spectrolab's Production Leader
- 30.7% Average BOL efficiency
- Best in class BOL & EOL
- AIAA-S111 & AIAA-S112 qualified
- Heritage upright lattice matched XTJ structure
- 26.7% EOL, 1E15 1MeV electron**
- Multiple sizes available (26-84 cm2)
Legacy Triple Junction Solar Cells
- XTJ Space Solar Cell 29.5% average efficiency
- UTJ Space Solar Cell 28.3% average efficiency
77cm2 Class (SuperCell)
Triple Junction Solar Cell
Space Panels
The greatest share of Spectrolab's product deliveries are fully assembled space solar panels. Based on a customer's specifications for maximum area, operating temperature and voltage, and the mission environment and duration, Spectrolab engineers maximize performance for End of Life performance. The panel substrates onto which Spectrolab's multijunction circuits are bonded and wired to terminations, are provided as customer-furnished equipment.
Space Arrays
Spectrolab manufactures and tests fully-integrated solar panels for commercial, civil and defense missions. These solar panels are then delivered to satellite prime contractors for integration onto spacecraft. Pictured here are typical examples of large solar panels.
Concentrator Cells
Spectrolab offers a variety of 3J concentrator solar cells with efficiencies up to 40% at concentration. Cells with performance optimized to concentrations above 1000 suns are available. Cells sold either as bare cells or binned discrete cells in waffle trays.
C4MJ– Upright 3J metamorphic cell
- First 40% production solar
- First fully qualified upright 3J metamorphic cell
C3MJ– Lattice matched 3J metamorphic cell
- 39.5% production solar cell
- Heritage lattice matched technology
- Low cost epitaxial design
C4MJ– Upright 3J metamorphic cell
C3MJ– Lattice matched 3J metamorphic cell