Rankers Physics

Properties of Semiconductors: Practice Problem & Solution

For a p-type semiconductor, which of the following statements is true? (2019)
Electrons are the majority carriers and trivalent atoms are the dopants.
Holes are the majority carriers and trivalent atoms are the dopants.
Holes are the majority carriers and pentavalent atoms are the dopants.
Electrons are the majority carriers and pentavalent atoms are the dopants.

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:

A p-type semiconductor is formed by doping an intrinsic semiconductor with trivalent impurity atoms. These trivalent atoms create electron vacancies or holes, making holes the majority charge carriers.[cite: 1]

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