The first space solar cell was launched in 1958 by Vangtuard I, a body-mounted structure, a single crystal Si substrate with an efficiency of about 10% (28 ° C). By the 1970s, people improved the battery structure, using BSF, lithography and better anti-reflection coating technology to increase the efficiency of the battery to 14%. In the 1970s and 1980s, ground solar cells doubled globally every 5.5 years; and the performance of space solar cells in space environments, such as radiation resistance, was greatly improved.
Due to the rapid development of the theory of solar cells in the 1980s, the performance of solar cells in the ground and space has been greatly improved. In the 1990s, the research on thin-film batteries and III-V batteries developed rapidly, and the concentrating array structure became more economical. The space solar cell market was highly competitive. There are two main ways to continue research on higher performance solar cells: research on concentrating cells and multi-bandgap cells.
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