First operational solar cell

In 1954 the American company Bell Laboratories developed the first modern solar cell, with an efficiency of five percent. The first significant technical use of solar cells followed in 1958 on the American satellite Vanguard 1.

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Further Readings: 
  • Perlin, John. From Space to Earth: The Story of Solar Electricity. Cambridge, MA: Harvard University Press, 2002.
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1954