Assertion: solar cell's layer | /r/HasProperty | negative
Facets:
Source sentences:
text: They are constructed with a positive layer and a negative layer, which together create an electric field, just like in a battery.
text: They are constructed with a positive layer and a negative layer, which together create an electric field, just like in a battery.
text: The filling of a solar cell consists of two different layers of silicon: negative and positive silicon, or n- and p-type silicon.