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This video shows electrostatic discharge arcing on a mock solar array that was exposed to 20 keV electrons in the lab to simulate what could happen in space.
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Efforts to recreate the sun's spectrum typically involve the use of solar simulators, xenon-arc lamps, or an assembly of different colored LEDs, most of which are calibrated using standards obtained by sending photovoltaic cells high into the atmosphere on balloons.
None of these methods provides the desired fidelity for modeling the long-term effects of operation beyond Earth's atmosphere. However, Aerospace is applying an innovative new technology—a supercontinuum laser—that could present a major step forward.
Read more
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Solar cells generate power for satellites, which means they limit how long the satellite is operational and how many capabilities it has. Solar arrays are also the largest component of the satellite, which makes them most susceptible to damage, both environmental and man-made. 
Aerospace has two labs, the Low Energy Accelerator Facility (LEAF) and the Photovoltaic Evaluation and Research Laboratory (PEARL), where we seek to understand and improve all components of the solar array to increase the resilience of our satellites in an increasingly hostile space environment. 
To test the solar cells as if they were in space, our researchers need to be able to subject solar cells to a variety of simulated space environments depending on the orbit and inclination of the mission. They do that with the equipment in these labs.
Explore the labs, and be sure to check out the proton accelerator and solar simulators.
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Solar cells generate power for satellites, which means they limit how long the satellite is operational and how many capabilities it has. Solar arrays are also the largest component of the satellite, which makes them most susceptible to damage, both environmental and man-made. 
Aerospace has two labs, the Low Energy Accelerator Facility (LEAF) and the Photovoltaic Evaluation and Research Laboratory (PEARL), where we seek to understand and improve all components of the solar array to increase the resilience of our satellites in an increasingly hostile space environment. 
To test the solar cells as if they were in space, our researchers need to be able to subject solar cells to a variety of simulated space environments depending on the orbit and inclination of the mission. They do that with the equipment in these labs.
Explore the labs, and be sure to check out the proton accelerator and solar simulators.
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Our researchers have tested solar cells at the edge of space by sending them up on a balloon. We patented our own solar cell test platform, the Aerospace Measurement Unit, which is smaller, cheaper, and easier to use than previous methods.


Read more
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Our scientists use this proton accelerator to simulate proton radiation, which is one of the main causes of solar cell failure.
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Solar cells can be operated like LEDs where you put current in and get light out. Depending on the solar cell technology, they emit light at different wavelengths and at different brightness as shown in the photo. Also, solar cells degrade with radiation, which can be characterized by this method, called electroluminescence.
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To test solar cells as if they were in space, our researchers need to be able to expose the cells to the effects of the sun. This Xe-lamp based solar simulator is highly tunable for measuring all advanced space solar cell technologies
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To test solar cells as if they were in space, our researchers need to be able to expose the cells to the effects of the sun. This device is a solar simulator, used to mimic the sun. This large-area LED-based solar simulator is used to characterize solar panels on the size-scale of CubeSats.
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The Aerospace Corporation
www.aero.org
John Binkley
SYSTEMS DIRECTOR
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The Aerospace Corporation
www.aero.org
John Binkley
SYSTEMS DIRECTOR
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{{TITLE}}



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