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Concepts Of Physics MCQ Edition [Volume 2]
Exam
Concepts Of Physics MCQ Edition [Volume 2]
Subject
Physics
Chapter
Semiconductors and Semiconductor Devices

Concepts Of Physics MCQ Edition [Volume 2] · Physics · Semiconductors and Semiconductor Devices

A p -type semiconductor is electrically

A pp-type semiconductor is electrically

Options

  1. Auncharged
  2. Bnegatively charged
  3. Cuncharged at 0 K0 \text{ K} but charged at elevated temperatures
  4. Dpositively charged

Correct answer

A. uncharged

Step-by-step solution

A pp-type semiconductor is formed by doping an intrinsic semiconductor with trivalent impurity atoms.

Since both the intrinsic semiconductor atoms and the impurity atoms are electrically neutral before doping, the resulting pp-type semiconductor has an equal total number of protons and electrons.

Therefore, the semiconductor as a whole remains electrically neutral or uncharged.
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