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Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
MCQ
For germanium diode, the junction voltage is about $.......$
  • A
    $0.7V$
  • ✓
    $0.3$
  • C
    $0.6V$
  • D
    $3V$
✓

Answer

Correct option: B.
$0.3$
The junction voltage $Vo$​ for a germanium diode is $0.3\  V$ at room temperature. This potential opposes the diffusion of electrons from $n-$side and holes from $p-$side. It is $0.7\  eV$ for $Si$ at room temperature.

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