Question

Which relation gives the electron concentration, hole concentration, and intrinsic carrier concentration in an intrinsic semiconductor?

Options

• \[n_{\mathrm e}>n_{\mathrm h}=n_{\mathrm i}\]

• \[n_{\mathrm e}=n_{\mathrm h}=n_{\mathrm i}\]

• \[n_{\mathrm h}>n_{\mathrm e}=n_{\mathrm i}\]

• \[n_{\mathrm e}=0,\quad n_{\mathrm h}=n_{\mathrm i}\]

Answer 1

Each electron entering the conduction band leaves one hole in the valence band. Electron and hole concentrations are therefore equal to the intrinsic carrier concentration.