Best answer:

Answer by Brother Otter
Conventional solar cells are semiconductor devices. Energy from sunlight triggers electrons in a doped silicon layer to ‘jump’ and that creates the movement that is an electric current. (That’s a really simplified version).
The average person cannot make silicon solar cells at home.
You can, however, make very low energy solar cells with copper. Here’s a link: http://worldwatts.com/homemade_solar_cell/homemade_solar_cell.html

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