Asianometry The Special Solar Cells That Go Up Into Space
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Mar 2, 2025 Discover the fascinating world of space-grade solar cells, as a New Zealand-American company secures significant funding to enhance its manufacturing facility. Learn about the evolution of solar technology, from its origins in the 1950s to its essential role in powering satellites. Delve into the unique challenges faced by solar cells in space, like extreme temperatures and radiation exposure. Finally, explore advancements in materials that improve durability and efficiency, promising exciting future applications both in space and on Earth.
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Space Solar Cells' Origin
- In 1954, Bell Labs created the first practical solar cell, initially intended for remote phone systems.
- High silicon purity costs hindered widespread adoption despite increasing efficiency.
Vanguard I and Solar Success
- Dr. Hans K. Ziegler championed solar power for satellites, leading to its use in the Vanguard I probe in 1958.
- Vanguard I's solar-powered transmitter outlasted its chemical battery counterpart, proving solar's viability in space.
Solar Cell Mechanics
- Solar cells generate electricity when photons energize charge carriers, allowing them to cross the semiconductor's band gap.
- The band gap size affects efficiency, with smaller gaps causing transparency loss and larger gaps generating excess heat.