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NEET 2011
Exam
NEET
Year
2011
Subject
Physics
Chapter
Semiconductors

NEET 2011 · Physics · Semiconductors

If a small amount of antimony is added to germanium crystal

If a small amount of antimony is added to germanium crystal

Options

  1. Athe antimony becomes an acceptor atom
  2. Bthere will be more free electrons than holes in the semiconductor
  3. Cits resistance is increased
  4. Dit becomes a pp-type semiconductor

Correct answer

B. there will be more free electrons than holes in the semiconductor

Step-by-step solution

When a small amount of antimony is added to germanium crystal, the crystal becomes nn-type semiconductor because antimoney is a pentavalent substrate. It excess free electrons.
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