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 (A)</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 (A)</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 (A)</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 (A)</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 (C)</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 (C)</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 (B)</p> Signup and view all the answers
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