MINDWAY's Triple-Junction GaAs Solar CICs (67.7mm×138.2mm) are high-performance photovoltaic products tailored for aerospace space applications. Based on the GaInP/GaAs/Ge triple-layer composite core structure, the product delivers excellent photoelectric conversion efficiency and outstanding radiation resistance, with lightweight and high-power density characteristics. It is fully adaptable to the power supply requirements of satellites in Low Earth Orbit (LEO), Medium Earth Orbit (MEO) and Geosynchronous Earth Orbit (GEO), and provides stable and efficient power support for critical aerospace missions with long service life and high reliability. Customization services are available to meet diverse design needs of spacecraft, with a short delivery cycle for mass production and on-demand customization.
Typical Applications
Communications & Navigation Satellites: GEO/MEO orbit high-orbit communication satellites, global navigation satellite systems, providing long-term stable power for on-board communication and positioning systems.
LEO Satellite Constellations: Commercial remote sensing, Internet of Things, LEO broadband satellite constellations, adapting to the high reliability and fast delivery needs of large-scale networking.
Deep Space Exploration Spacecraft: Lunar/Mars probes, deep space detectors, withstanding extreme radiation and temperature environments in deep space to ensure energy supply for long-distance exploration missions.
Manned Spaceflight & Space Station: Providing auxiliary/main power for space station modules, manned spaceships, cargo spaceships and other core spacecraft, meeting high safety level requirements.
Small Satellites & CubeSats: The lightweight and small size characteristics are suitable for the design of small satellites and CubeSats, achieving high power output with limited load.
Specification
Category
Parameter
Technical Index
Mechanical & Structural Parameters
Substrate Material
Ge
Base Material
GaInP/GaAs/Ge
Cell Thickness
150μm±20μm
CICs Size
67.7₀⁺⁰·⁰⁵mm × 138.2₀⁺⁰·⁰⁵mm
CICs Thickness
300±25μm
Effective Cell Area
75.47cm²
AR-coating
TiOx/Al₂O₃
Standard Coverglass
KFG120, 120μm thickness (customizable)
Interconnector Thickness
30μm
Interconnector Type & Pull Test (45° single point)
Silver: ＞1.6N; Kovar (silver coated): ＞1.6N
Bypass Protection
Si Diode
Welding Method
Weld / Solder
Average Weight
≤115mg/cm²
Custom Options
Coverglasses with different thicknesses, ITO coverglass available
Electrical Performance (@AM0,1353W/m²,25℃)
Bare Cell Efficiency (η)
30%
Open Circuit Voltage (Voc)
2.74V
Short Circuit Current Density (Jsc)
17.4mA/cm²
Current Density @ Max. Power (Jm)
16.4mA/cm²
Voltage @ Max. Power (Vm)
2.42V
Si Bypass Diode Parameters
Forward Voltage (+2.5A)
1.0V
Reverse Current (-4.5V)
＜0.7mA
Radiation Performance (1Mev Electron Irradiation, EOL/BOL Ratios)
Voc/Voc0 (1E14 e/cm²)
0.95
Voc/Voc0 (2E14 e/cm²)
0.94
Voc/Voc0 (1E15 e/cm²)
0.90
Isc/Isc0 (1E14 e/cm²)
1.00
Isc/Isc0 (2E14 e/cm²)
0.99
Isc/Isc0 (1E15 e/cm²)
0.96
Pmp/Pmp0 (1E14 e/cm²)
0.95
Pmp/Pmp0 (2E14 e/cm²)
0.93
Pmp/Pmp0 (1E15 e/cm²)
0.86
Thermal Properties (CIC)
Absorption Coefficient
≤0.89
Short Circuit Current Temp Coefficient (Jse)
12.0%/℃
Open Circuit Voltage Temp Coefficient (Voe)
-5.6%/℃
Current Density @ Max. Power Temp Coefficient (Jm)
9.0%/℃
Voltage @ Max. Power Temp Coefficient (Vm)
-5.8%/℃
Operating Temperature Range
20℃~80℃
Matched Satellite Solar Panel Parameters
Service Orbit
LEO/MEO/GEO
Design Service Life
8 years (LEO), 15 years (GEO/MEO)
Power-to-Mass Ratio (Al honeycomb+CFRP)
88~125W/kg
Power-to-Mass Ratio (PCBs)
65W/kg
Power-to-Mass Ratio (Al substrate)
38W/kg
Mass per Area (Al honeycomb+CFRP)
2.0~3.2kg/m²
Mass per Area (PCBs)
3.5kg/m²
Mass per Area (Al substrate)
7.3kg/m²
Delivery Cycle
1 month
Product Advantage
1
Large Effective Cell Area with Stable High Efficiency
Has a 75.47 cm² cell area (67.7mm×138.2mm) and 30% bare cell conversion efficiency under AM0 conditions, providing stable high power for space applications requiring large power supply.
2
Exceptional Radiation Hardness for Space Environments
Maintains excellent performance after 1Mev electron irradiation: Pmp/Pmp0 is 0.86 at 1E15 e/cm² and 0.93 at 2E14 e/cm², ensuring reliable operation in space orbits.
3
Excellent Thermal Stability & Low Light Absorption
Low absorption coefficient (≤0.89) and calibrated temperature parameters (20℃~80℃) ensure stable performance under extreme orbital temperature changes.
4
Lightweight & Reliable Mechanical Design
Lightweight (≤115mg/cm²) with CICs thickness 300±25μm and 30μm interconnectors; silver/silver-coated Kovar interconnectors (pull force >1.6N) ensure stable connection, with integrated Si diode bypass protection and dual assembly methods for compatibility.
5
High-Quality Material & Customizability
Adopts GaInP/GaAs/Ge substrate, TiOₓ/Al₂O₃ AR coating and 120μm KFG120 coverglass; supports custom coverglasses (optional ITO) for diverse space application needs.
6
Proven Long-Term Reliability & Fast Delivery
Matching solar panels have 8-year LEO/15-year GEO service life and 1-month delivery cycle, meeting satellite project demands.
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