What did researchers observe about silicon that led them to start using it to develop solar cells?

Question

A. It was made of a single crystal
B. It conducted electricity
C. It melted at low temperatures
D. It became warm in sunlight

Answer 1

B. It conducted electricity

Researchers observed that silicon has semiconductor properties, which means it can conduct electricity under certain conditions. This property is fundamental for the development of solar cells, as it allows silicon to convert sunlight into electrical energy.