XTE+ GEO Solar Cell
Spectrolab
Spectrolab's latest 33% BOL efficiency triple-junction solar cell optimized for GEO and high-radiation missions (>1e14 fluence), fully qualified under AIAA-S111-2014.
Typed specifications18 values
Discloses 5 of 7 fields engineers filter by in this category (category median 2).
- Mass
- 50–84 g product page
- Cell efficiency
- 32.6 % nom. · BOL · datasheet p.1 32.6 % BOL | 28.5 % EOL, 1E15 1MeV electron
- Envelope (L×W×H)
- 6.91 x 3.97 cm 27cm2 Class · datasheet p.2
- Operating temperature
- 15–75 °C datasheet p.2
- Design lifetime
- 15 years GEO · datasheet p.1
- Array configuration
- other Space Qualified Triple Junction Solar Cell (bare cell product) · datasheet p.1
- Cell type
- triple-junction GaAs Space Qualified Triple Junction Solar Cell · datasheet p.1
- Cell part number
- Spectrolab XTE+ GEO datasheet p.1
- Open-circuit voltage at the panel output (Voc)
- 2.8 V datasheet p.1
- Max-power voltage at the panel output (Vmp)
- 2.51 V datasheet p.1
- Flight heritage
- 25+ years of heritage 3J devices datasheet p.1
- Satellite class
- GEO Targeting GEO to MEO missions · datasheet p.1 ESPA-class
- Cell area
- 77 cm² 77 cm2 class (rectangular cell) · datasheet p.2 27 cm² cell size of the datasheet parameters; 27cm2 class (rectangul…
- Power temperature coefficient
- -5.6 %/°C datasheet p.2
Each value is typed with its unit and measurement condition and cites the datasheet page it was taken from. Nothing is guessed: a field that is absent here has not been published by the manufacturer. machine-extracted ✓ checked by NewSpace Market ✓ manufacturer confirmed by the manufacturer.
As published by the supplier17 lines, in the manufacturer's own wording
- BOL efficiency
- 33%
- EOL efficiency at 1e15 fluence
- 28.5%
- Cell technology
- GaInP/GaAs/Ge lattice matched triple-junction (3J)
- Qualification standard
- AIAA-S111-2014
- Target orbit
- GEO (>1e14 fluence)
- Available forms
- Bare cells or CIC assemblies
- Cell Thickness
- 160 µm
- Cell Mass
- 50-84 mg/cm²
- Solar Absorptance
- 0.89
- Emittance
- 0.85
- Open Circuit Voltage (ΔVoc/ΔT)
- -5.6 mV/°C
- Short Circuit Current (ΔJsc/ΔT)
- 10 µA/cm²/°C
- Efficiency
- 32.6%
- Voc
- 2.803 V
- Jsc
- 18.21 mA/cm²
- Vmp
- 2.512 V
- Jmp
- 17.56 mA/cm²
About
The XTE+ GEO is Spectrolab’s newest GaInP/GaAs/Ge lattice-matched triple-junction solar cell delivering 33% beginning-of-life efficiency — the highest in the XTE+ family. Optimized for geosynchronous orbit and high-fluence environments exceeding 1e14 1 MeV electrons, it achieves 28.5% efficiency at 1e15 fluence, making it ideal for 15-year GEO communication satellite missions.
Fully qualified under the AIAA-S111-2014 standard, the XTE+ GEO provides industry-leading BOL and EOL performance. Available as bare cells or as complete CIC (Cell Interconnect Coverglass) assemblies with space-qualified coverglass, bypass diode, and interconnects for welded connections. With over 70 years of Spectrolab space photovoltaic heritage, the XTE+ GEO powers some of the world’s most demanding satellite missions.
Documentation
Need the full ICD, test reports or a specific revision? Ask the supplier directly.