Semiconductor Doping: Phosphorus and Silicon
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Questions and Answers

What is the primary reason why silicon is the most important commercial semiconductor?

  • It is highly electronegative
  • It is abundant and can be made extremely pure (correct)
  • It has a high atomic mass
  • It has a high band gap
  • Which element is more electropositive in the compound GaP?

  • Nitrogen
  • Sulfur
  • Phosphorus
  • Gallium (correct)
  • Why would ZnS be expected to have a larger band gap than GaP?

  • Because sulfur is more electronegative than phosphorus
  • Because zinc is more electropositive than gallium
  • Because sulfur is located above phosphorus in the periodic table
  • Because zinc is one element to the left of gallium in the periodic table (correct)
  • What is the primary purpose of controlled doping in semiconductor materials?

    <p>To influence the conductivity of the semiconductor</p> Signup and view all the answers

    Which of the following would be expected to have a larger band gap, GaP or GaN?

    <p>GaN</p> Signup and view all the answers

    What is the term for adding controlled amounts of impurity atoms to a semiconductor material?

    <p>Doping</p> Signup and view all the answers

    What is the main reason why silicon can be made into enormous crystals that are nearly atomically perfect?

    <p>It can be made extremely pure</p> Signup and view all the answers

    Which element is more electronegative, phosphorus or nitrogen?

    <p>Nitrogen</p> Signup and view all the answers

    What is the primary advantage of using silicon as a semiconductor material?

    <p>It is highly abundant and can be made extremely pure</p> Signup and view all the answers

    Which of the following elements is one element to the left of gallium in the periodic table?

    <p>Zinc</p> Signup and view all the answers

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