Question

In graphs of the electronic band structure of solids, the band gap generally refers to the _______________________ between the top of the valence band and the bottom of the conduction band in insulators and semiconductors.

• A. current difference
• B. energy difference (in electron volts)
• C. hole difference
• D. none of the above

Answer 1

The correct option is B energy difference (in electron volts)

The band gap or forbidden gap refers to energy difference (in electron volts) between top of valence band and the bottom of conduction band in a material, This is the band of energy where electron cannot have any energy corresponding to it.