Which of the following is acceptor impurity?
Correct answer: B. Gallium
- A. Antimony
- B. Gallium
- C. Silicon
- D. Arsenic
Explanation
Gallium (Ga) is indeed an acceptor impurity used in semiconductor materials. Gallium is a trivalent dopant that can create holes in the crystal lattice of semiconductors like silicon or germanium when added to them. By accepting an electron from neighboring atoms, gallium introduces positive charge carriers (holes) into the material, affecting its conductivity characteristics.
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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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