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

A p -type semiconductor is electrically

Options

Auncharged
Bnegatively charged
Cuncharged at 0 K but charged at elevated temperatures
Dpositively charged

Correct answer

A. uncharged

Step-by-step solution

A p -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 p -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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