研究目的
Investigating the combination of high efficiency, radiation hardness, and reliability of III-V compound triple junction solar cells with a low-cost approach for space applications.
研究成果
The qualification test results indicate that the lower cost of the solar cells does not compromise their reliability or performance, making them suitable for space applications. The solar cell assemblies demonstrated high efficiency and radiation hardness, meeting the ECSS standards for space qualification.
研究不足
The study mentions a more relaxed visual inspection criteria for low-cost components and limitations in the number of samples that could be tested simultaneously due to equipment constraints.
1：Experimental Design and Method Selection:
The study focuses on developing a low-cost triple junction solar cell assembly with high efficiency and radiation hardness for space applications. The methodology includes MOCVD growth at high rates, simplification of post-growth process steps, and high-rate metal evaporation.
2：Sample Selection and Data Sources:
200 solar cell assemblies were fabricated from a batch of 600 low-cost solar cells randomly selected for qualification.
3：List of Experimental Equipment and Materials:
Includes Cesi Triple Junction Low cost (CTJ-LC) bare solar cells, Qioptiq CMG100 coverglasses, DC93-500 sealant, Azur Space 81503 silicon bypass diodes, and Ag-clad INVAR interconnects.
4：Experimental Procedures and Operational Workflow:
The solar cell assemblies underwent a series of qualification tests including thermal cycling, UV exposure, electron irradiation, and life tests under simulated GEO and LEO conditions.
5：Data Analysis Methods:
Electrical performances were monitored before and after tests, with parameters such as Isc, Voc, Pmax, and FF analyzed for degradation.
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