Rankers Physics

Properties of Semiconductors: Practice Problem & Solution

The depletion layer in the p-n junction region is caused by (1991)
Drift of holes
Diffusion of charge carriers
Migration of impurity ions
Drift of electrons

Solution Explained:

To solve this problem, we apply the core principles of Properties of Semiconductors. Understanding the underlying formula is key to arriving at the correct answer below:

Due to the concentration gradient across the junction, majority charge carriers diffuse across the boundary. This diffusion depletes the region of mobile charges, creating the depletion layer.

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