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The conductivity of intrinsic semiconductors, such as silicon and ger
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The conductivity of intrinsic semiconductors, such as silicon and germanium, can be increased when small amounts of group 3A or group 5A elements are added, a process called doping. The resulting semiconductors are called either p-type or n-type semiconductors. Classify the type of doping condit...

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  • June 27, 2023
  • 1
  • 2022/2023
  • Exam (elaborations)
  • Questions & answers

Subjects

  • conductivity intrinsic
  • intrinsic semiconductors
  • semiconductors such
  • such as
  • as silicon
  • silicon ger

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  • HBO Small Business en Ondernemerschap
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The conductivity of intrinsic semiconductors, such as silicon and germanium, can be increased
when small amounts of group 3A or group 5A elements are added, a process called doping. The
resulting semiconductors are called either p-type or n-type semiconductors. Classify the type of
doping condition and diagrams depicting the electron population of molecular orbital energy-
level bands as p-type or n-type semiconductors. p-type semiconductors n-type semiconductors


Solution


Band diagram Ge doped with Al represents p - type semiconductor. As Al has only 3 electrons in
its valence shell so it provides holes as majority carrier in intrinsic Ge.
Band diagram Ge doped with Sb represents an n - type semiconductor. As Sb has five e\'s in its
valence shell so it provides e\'s as majority carrier in intrinsic Ge.

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