30% Efficiency Triple Junction GaAs Solar Cell

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The 30% Efficiency Triple Junction GaAs Solar Cell is a high-performance solar cell tailored for demanding space applications. Its multi-junction technology enables exceptional power conversion efficiency, making it a preferred choice for satellites and spacecraft requiring reliable energy sources in space.

Using advanced GaInP/InGaAs/Ge materials, this solar cell achieves a 30% efficiency at the beginning of life (BOL) and offers robust performance even in radiation-intense environments, making it suitable for various space missions.

KEY FEATURES

• High Efficiency: 30% efficiency at the beginning of life (BOL) under standard AM0 conditions.
• Triple Junction Technology: GaInP/InGaAs/Ge layers optimize power generation across multiple wavelengths of solar radiation.
• Radiation Resistance: The cell retains a significant portion of its efficiency even after exposure to radiation doses up to 1×10¹⁵ e/cm², making it ideal for long-term missions.
• Bypass Diode Integration: Built-in silicon bypass diode for enhanced shadow protection and reliability in orbit.
• Compact & Lightweight: The cell measures 80.15mm × 40.15mm with a thickness of 320±20μm, and weighs just 3.6g, making it perfect for space-constrained applications.

RADIATION DEGRADATION

The solar cell has been designed to withstand radiation exposure, with the following degradation data:

• Current Retention (Im/Im₀): 0.93 after 1×10¹⁵ e/cm²
• Voltage Retention (Vm/Vm₀): 0.90 after 1×10¹⁵ e/cm²
• Power Retention (Pm/Pm₀): 0.84 after 1×10¹⁵ e/cm²

APPLICATIONS

• Low-Earth Orbit (LEO) Satellites
• Geostationary Satellites (GEO)
• Interplanetary Spacecraft
• CubeSats and Nanosatellites requiring high-efficiency, compact power solutions.

SHADOW PROTECTION

The solar cell features a discrete bypass diode, ensuring continued performance even under partial shadowing conditions, vital for maintaining system integrity in orbit.

ENVIRONMENTAL TOLERANCES

• Temperature Coefficient: The cell is optimized for space environments, with temperature-related performance coefficients available for different radiation doses.
• Radiation Resistance: Capable of withstanding high doses of electron and proton radiation, ensuring long mission durations without significant efficiency loss.