CUET Preparation Today
When a semiconductor is doped with a donor impurity |
electron concentration decreases and hole concentration remains the same hole concentration decreases and electron concentration remains the same electron concentration increases and hole concentration remains the same electron concentration increases and hole concentration decreases |
electron concentration increases and hole concentration decreases |
The correct answer is Option (4) → electron concentration increases and hole concentration decreases Doping a semiconductor with a donor impurity (pentavalent atom) adds extra electrons to the conduction band. Therefore, Electron concentration increases, while the hole concentration in the valence band remains approximately the same. |
