XTE-SF Solar Cell
Spectrolab
Spectrolab's XTE Standard Fluence 32% BOL triple-junction solar cell for GEO and LEO missions up to 1e15 fluence, qualified under AIAA-S111-2014.
Technical specifications
- BOL efficiency
- 32%
- EOL efficiency at 1e15 fluence
- 27.9%
- Cell technology
- GaInP/GaAs/Ge lattice matched triple-junction (3J)
- Qualification standard
- AIAA-S111-2014
- Target orbit
- GEO and LEO (≤1e15 fluence)
- Available forms
- Bare cells or CIC assemblies
- CIC Absorptance
- 0.90
- Emittance
- 0.85
- Mass
- 84 - 130 mg/cm²
- Open Circuit Voltage Coefficient
- -5.6 mV/°C
- Short Circuit Current Coefficient
- 11 µA/cm²/°C
- Voc (V)
- 2.750
- Jsc (mA/cm²)
- 18.6
- Vmp (V)
- 2.435
- Jmp (mA/cm²)
- 17.9
About
The XTE-SF (Standard Fluence) is a GaInP/GaAs/Ge lattice-matched triple-junction solar cell achieving 32% beginning-of-life efficiency, optimized for GEO and LEO missions at fluences up to 1e15 1 MeV electrons. With 27.9% efficiency at 1e15 fluence, it delivers reliable end-of-life performance for standard commercial and government satellite missions.
Fully qualified under AIAA-S111-2014, the XTE-SF is part of Spectrolab’s XTE family of industry-leading cells that maintain 32% efficiency across multiple mission profiles. Suitable for both GEO communication satellites and LEO Earth observation spacecraft. Available as bare cells or CIC assemblies with space-qualified coverglass, bypass diode, and interconnects for welded connections.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.