Which one of the following is an intrinsic semiconductor?
Correct answer: D. Silicon
- A. Boron
- B. Copper
- C. Indium
- D. Silicon
Explanation
Intrinsic semiconductors are pure forms of semiconductor materials. Silicon, being a group 4 element, can function as an intrinsic semiconductor without the need for doping. Boron and Indium are group 3 elements and are commonly used as dopants to create extrinsic semiconductors. Copper, on the other hand, is a metal and a good conductor, not a semiconductor.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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