Assertion: solar cell's electron | /r/CapableOf | transfer to the conduction band
Facets:
value: from the valence
type: OTHER
Source sentences:
text: If the valence band is completely full and the conduction band is completely empty, then electrons cannot move in the solid; however, if some electrons transfer from the valence to the conduction band, then current can flow (see carrier generation and recombination).