High-efficiency four-junction GaAs solar cells suitable for use in spacecraft such as satellites.
A four-junction GaAs solar cell that can be used in spacecraft such as artificial satellites. It has improved conversion efficiency compared to the three-junction GaAs solar cells commonly used in many conventional satellites.
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basic information
The main performance of the 4-junction (4J) GaAs solar cell is as follows: Average conversion efficiency (BOL): 31.8% Average open-circuit voltage (BOL): 3451mV Average short-circuit current (BOL): 457.6mA Average mass: ≦1780mg (solar cell alone) Size: 40mm x 80mm (standard) Provision is also possible at CIC.
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Applications/Examples of results
This is a four-junction GaAs solar cell that improves the conversion efficiency of three-junction GaAs solar cells used in numerous low Earth orbit and geostationary artificial satellites and spacecraft. It is being used as the solar cell for future satellites.
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Company information
The Advanced Technology Research Institute is an engineering company that supports space development and utilization, including rockets and artificial satellites, in Japan and around the world. We conduct a wide range of activities from the design and development of space systems, subsystems, and components for satellites and rockets, both small and large, to the sale of overseas space equipment. Additionally, we sell solar cells for space and ground use, and we design and develop solar cell panels for space as well as sell solar power generation modules and systems for ground use. For small satellites, including CubeSats, we provide system development from 1U to 12U, offer bus components, design and develop bus equipment, assemble satellites, and conduct integration and testing of satellites, including payloads. We also design, develop, and sell small electric propulsion systems for CubeSats and small satellites.