What are Satellite Solar Cells?

Satellite Solar Cells are space-qualified photovoltaic devices designed to convert incident solar radiation into electrical energy for spacecraft power systems. These cells form the fundamental building blocks of solar arrays and operate based on the photovoltaic effect, where absorbed photons generate electron-hole pairs within semiconductor junctions, producing a direct current output. Configured in series and parallel combinations, solar cells deliver the required voltage and current levels to support onboard subsystems and charge energy storage units.

Engineered for operation in vacuum and high-radiation environments, satellite solar cells are optimized for durability, radiation tolerance, and thermal stability. Their performance degrades over time due to radiation-induced displacement damage and ultraviolet exposure, making material selection and end-of-life characterization critical for mission assurance. Electrical output characteristics and conversion efficiency directly determine spacecraft power availability, thermal balance, and long-term mission sustainability.

Key specifications of the satellite solar cell:

• Orbit: Defines the operational environment such as LEO, MEO, GEO, or deep space. Orbit determines radiation intensity, atomic oxygen exposure, thermal cycling frequency, and incident solar flux, all of which influence degradation rates, shielding requirements, and long-term power generation capability.
• Satellite Type: Specifies the class of spacecraft hosting the solar cells, such as CubeSat, small satellite, or large platform. Satellite type influences available surface area, deployment mechanisms, structural constraints, and overall power demand, directly affecting cell sizing and array configuration.
• Cell Material: Refers to the semiconductor composition used in the photovoltaic junction, such as silicon or multi-junction III-V materials. Cell material determines bandgap characteristics, radiation tolerance, temperature coefficients, and achievable conversion efficiency, impacting both beginning-of-life and end-of-life performance.
• Output Current: Indicates the current delivered under specified illumination conditions. Output current affects total power generation capability and influences array string configuration, harness sizing, and power conditioning requirements within the spacecraft electrical system.
• Output Voltage: Specifies the voltage generated by the cell or cell string under operational conditions. Output voltage determines series configuration requirements and compatibility with the spacecraft power bus and maximum power point tracking systems.
• Short Circuit Current: Represents the current produced when the cell terminals are shorted under illumination. Short circuit current is a key parameter for characterizing cell performance, assessing degradation over time, and designing protection and current-limiting circuitry.
• Efficiency EOL: Defines the conversion efficiency of the solar cell at end-of-life conditions after accounting for radiation and environmental degradation. End-of-life efficiency is critical for mission power budgeting, ensuring sufficient energy generation throughout the intended operational lifetime.

The Largest Database of Satellite Solar Cells

SatNow has listed Satellite Solar Cells from the leading manufacturers and made them searchable by specification. You can enter the key parameters and the search tool will scan catalogs from the leading manufacturers to identify products that meet your spec. Once you find Satellite Solar Cells that meet your requirement, you can view product information, download datasheets or request quotations. Quotation requests will be routed to the manufacturer of the product who will get back to you directly. The quotation will also be routed to distributors of the product in your region.