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

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
Question
In an intrinsic semiconductor, conductivity is due to:
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Answer

  1. Breaking of covalent bonds
Explanation:
In intrinsic semiconductors, n = p. Hence, at room temperature, no free electrons are available for conduction.
If some energy is supplied to the atoms of intrinsic semiconductor, the covalent bonds will break and electrons will be freed, each electron will leave behind a hole and capture a new hole the process will continued and charge flows through intrinsic semiconductor.
Thus, in intrinsic semiconductor conductivity is due to breaking of covalent bonds.

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