Intrinsic vs Extrinsic Semiconductor
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Questions and Answers

What is the pure form of a semiconductor known as?

  • Conductive semiconductor
  • Doped semiconductor
  • Intrinsic semiconductor (correct)
  • Extrinsic semiconductor

    • How is an n-type semiconductor produced?

  • By adding Phosphorus (P) or Arsenic (As) to the intrinsic semiconductor (correct)
  • By adding Boron (B) or Aluminum (Al) to the intrinsic semiconductor
  • By adding Indium (In) to the intrinsic semiconductor
  • By adding atoms of the third group's elements

    • What are ionized phosphorus atoms in a semiconductor called?

  • Neutral atoms
  • Valence atoms
  • Acceptor atoms
  • Donor atoms (correct)

    • How is a p-type semiconductor produced?

    <p>By adding Boron (B) or Aluminum (Al) to the intrinsic semiconductor</p> Signup and view all the answers

    What type of impurities are intentionally added in an extrinsic semiconductor?

    <p>Impurities from the fifth group of the periodic table</p> Signup and view all the answers

    What is the role of a Group 3 impurity in a P-N junction?

    <p>Creating a layer of negative charges in the p-side of the junction</p> Signup and view all the answers

    What happens when an electron diffuses from the n-side to the p-side of a P-N junction?

    <p>An ionized donor is left behind on the n-side</p> Signup and view all the answers

    What gives rise to a diffusion current across the junction in a P-N junction?

    <p>The concentration difference of holes and electrons at the two sides</p> Signup and view all the answers

    What term is used for the region of positive charge and negative charge on either side of the junction in a P-N junction?

    <p>Depletion region</p> Signup and view all the answers

    What is responsible for developing an electric field in a P-N junction?

    <p>Layer of positive charge on either side of the junction</p> Signup and view all the answers

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