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Wilhelm Hallwachs discovered that combining copper and cuprous oxide is photosensitive.
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Albert Einstein published his paper on the photoelectric effect.
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William J. Bailley invents a solar collector.
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The existence of the barrier layer was noted.
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Robert Millikan provided proof of the photoelectric effect.
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Jan Czochralski finds a way to grow single-crystal silicon.
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Albert Einstein wins the Noble Prize for his theories.
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Audobert and Stora figure out the photovoltaic effect.
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Your Solar House is published.
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Dr. Dan Trivich makes the first theorectical calculations.