Question

The energy required by an electron to jump the forbidden band in silicon at room temperature is about ______.

Options

• 0.01 eV

• 0.05 eV

• 0.7 eV

• 1.1 eV

Answer 1

The energy required by an electron to jump the forbidden band in silicon at room temperature is about 1.1 eV.

Explanation:

For pure Si, the band gap or forbidden gap is 1.1 eV. An electron must therefore have this much energy to jump the forbidden band in Si at room temperature.