Spectrolab's High-Efficiency Solar Cells and CICs

Advancing Space Missions with Spectrolab's High-Efficiency Solar Cells and CICs

As space exploration pushes the boundaries of human achievement, the need for reliable, high-performance solar power solutions is paramount. Spectrolab, a leader in the field of photovoltaic technology, offers a range of GaInP/GaAs/Ge lattice-matched triple-junction (3J) solar cells. These cells are not only designed to meet but exceed the rigorous demands of various space missions, from Low Earth Orbit (LEO) to deep space missions. Below, we explore the advanced technical features and performance metrics of Spectrolab’s solar cells and Cell-Interconnect-Coverglass (CIC) assemblies.

Overview of Spectrolab’s Solar Cell Technologies

Spectrolab’s portfolio includes a variety of solar cells tailored for specific mission profiles, each offering distinct benefits in terms of efficiency, radiation tolerance, and thermal management.

XTE Family of Cells: Pioneering Efficiency and Durability

XTE-SF (Standard Fluence)

• Efficiency: The XTE-SF solar cell offers an impressive BOL efficiency of 32.2%, maintaining 27.9% EOL efficiency after significant radiation exposure. [View Datasheet]
• Thermal Characteristics: It operates approximately 2°C cooler than other space-grade solar cells, reducing thermal stress and extending operational life.
• Applications: Suitable for both LEO and GEO missions, these cells are available in multiple sizes up to 85 cm².

XTE-HF (High Fluence)

• Efficiency: The XTE-HF cell provides a BOL efficiency of 32.1%, retaining 23.7% efficiency after exposure to high radiation levels. [View Datasheet]
• Radiation Tolerance: Designed for missions with high radiation exposure, such as MEO missions.
• Size Options: Available in a range of sizes to fit different satellite power system designs.

XTE-LILT (Low Intensity Low Temperature)

• Efficiency: This cell excels under low light and low-temperature conditions, with 31.6% BOL efficiency at 1 AU and 37% at 5.5 AU. [View Datasheet]
• Low-Temperature Operation: Ideal for deep space missions, particularly those beyond Mars.
• Mission Suitability: Optimized for regions with reduced solar intensity and extreme cold.

XTJ Prime and Legacy Cells: Proven Space Performance

XTJ Prime

• Efficiency: The XTJ Prime series offers a BOL efficiency of 30.7% and retains 26.7% efficiency at EOL after significant radiation exposure. [View Datasheet]
• Structural Integrity: Features the heritage upright lattice-matched triple junction structure, known for its robustness in space environments.
• Temperature Coefficients: Engineered to operate cooler than other space-grade solar cells, reducing thermal degradation.

UTJ and XTJ Legacy Cells

• UTJ Cells: Delivering up to 28.3% efficiency, these cells are known for their radiation tolerance and are available in various sizes. [View UTJ Datasheet]
• XTJ Cells: The XTJ cells offer a BOL efficiency of up to 29.5% and are available in CIC assemblies, simplifying satellite integration. [View XTJ Datasheet]

Spectrolab’s CIC Assemblies: Seamless Integration for Space Missions

Spectrolab’s CIC assemblies are meticulously designed to facilitate the integration of solar cells into satellite systems, offering enhanced reliability and performance.

Key Features

• Space-Qualified Coverglass: Coverglass options range from 3 mils to 30 mils in thickness, with various coatings available.
• Bypass Diodes and Interconnects: These assemblies include discrete Si bypass diodes and welded interconnects for robust electrical connections.
• Customizable Configurations: Available in multiple configurations, from bare cells to fully integrated assemblies on solar panels. [View Datasheet]

Conclusion

Spectrolab continues to set the standard in space solar power solutions with its innovative range of high-efficiency solar cells and CIC assemblies. Whether your mission is in LEO, GEO, or deep space, Spectrolab offers products that provide unparalleled efficiency, durability, and reliability. As the demands of space exploration evolve, Spectrolab remains at the forefront, ready to support the next generation of space missions with its advanced photovoltaic technology.

For more information on Spectrolab’s products, visit Spectrolab's website.