Assertion: solar cell's electron | /r/CapableOf | move through the material
Facets:
Source sentences:
text: In their excited state in the conduction band, these electrons are free to move through the material, and it is this motion of the electron that creates an electric current in the cell.
text: The free electrons travel through the material, and the resulting current is harnessed when conductors are attached to either side of the cell.