Space Solar Cell Assembly

YIM offers a range of GaInP2/GaAs/Ge on Ge substrate triple junction solar cell assembly (efficiency class 30-32%) The solar cell assembly is equipped with an discrete Si bypass diode, interconnectors and cover glass.The interconnectors are covered with silver or kovar, fixed by a sophisticated welding process and designed for LEO, MEO and GEO Missions.All used materials and components are space-qualified.Complies with standard ECSS E ST20-08C.

Characteristics is high output power,high strong anti-radiation capacity,wide application range. Our triple junction GaAs solar cells in missions like Yaogan-32, Moziji, Haiyang-2B, Beidou-42, Piaochong-5, Chang’e-4,wangtong-1, Beidou-3（M12), Gaofen-11(02), ZY-3(03),NH-1,TT-5 and so on, also hundrends of international satellites missions,  till now present very good performance. They are qualified for both Low Earth Orbit (LEO) and Geostationary Orbit (GEO) satellites according .

We also provide triple-junction GaAs solar array, solar arrays are consiste triple-junction GaAs solar cells or solar panels in a certain way of electrical assembly.

In addition, in the aerospace field, space grade solar panels play a key role in providing continuous energy for satellites, and their performance directly affects the operational stability and mission life of satellites. Among them, the three junction gallium arsenide solar cells used in low Earth orbit satellites stand out due to their excellent photoelectric conversion efficiency, becoming the core choice for low Earth orbit satellite energy systems. The low Earth orbit environment is complex and faces challenges such as frequent orbital maneuvers, space radiation, and drastic temperature changes. However, the triple junction gallium arsenide material designed with a multi-layer structure, can fully utilize solar energy in different bands and achieve higher power output within the limited satellite payload space, perfectly adapting to the stringent energy density requirements of low Earth orbit satellites.

For space missions that pursue high reliability and standardization, ECSS E ST20-08C certified solar cells are a reliable choice. The E ST20-08C standard developed by ECSS (European Space Standardization Cooperation Organization) covers strict requirements for the entire process of solar cell design, production, and testing, including multiple key indicators such as environmental adaptability, mechanical performance, and electrical stability. The certification of solar cells means that their long-term reliability in extreme space environments has been officially verified, providing solid energy support for various satellite missions, especially long-life and high-risk deep space exploration or commercial communication satellites, effectively reducing the risk of energy system failures during missions.

Under the trend of miniaturization and low-cost space exploration, cube satellites have demonstrated unique advantages with efficient solar cells. CubeSats have been widely used in scientific research experiments, remote sensing monitoring, and other fields due to their standardized size design and flexible task deployment mode. This type of solar cell is specially optimized for the limited surface area and lightweight requirements of CubeSats. While ensuring efficient photoelectric conversion, it has a thinner and lighter structure and stronger integration, which can closely fit the external structure of CubeSats, maximize the use of satellite surface space to obtain solar energy, and provide reliable energy support for small satellites to complete diversified tasks under limited energy conditions.

In summary, whether it is the three junction gallium arsenide solar cells used to cope with the complex environment of low Earth orbit, ECSS certified solar cells that meet strict international standards, or high-efficiency solar cells used in cube satellites that are compatible with miniaturized satellites, they all play an irreplaceable role in their respective application scenarios, jointly promoting the continuous development of space exploration and satellite technology.

It is important to choose suitable space solar cells for your satellite, considering efficiency, durability, weight, and size. Each type of battery works differently under harsh space conditions. At present, our multi junction solar cells can achieve an efficiency of 32%. The efficiency of flexible solar cells can reach up to 22.7%. The new design of solar cells has a longer lifespan and stronger radiation treatment capability. Your mission and your destination in space will help you make a decision.