copper oxide photocell | ewa justka | ewajustka

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copper oxide photocell

from Electrochemical, photoresistive and photomagnetic properties of semiconductors by ewa justka

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When sunlight hits the electrons in the cuprous oxide, some of the electrons gain enough energy from the sunlight to jump past the bandgap and become free to conduct electricity.

The free electrons move into the saltwater, then into the clean copper plate, into the wire, through the meter, and back to the cuprous oxide plate.

As the electrons move through the meter, they perform the work needed to move the needle. When a shadow falls on the solar cell, fewer electrons move through the meter, and the needle dips back down.

(scitoys.com/scitoys/scitoys/echem/echem2.html)

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from Electrochemical, photoresistive and photomagnetic properties of semiconductors, released July 29, 2014

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