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Band gap of germanium

Band gap of germanium

Item no.: P2530402

Difficulty Expenditure of Time print
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Principle

The conductivity of a germanium test sample is measured as a function of temperature. The energy gap is determined from the measured values.

Tasks

  1. The current and voltage are to be measured across a germanium test-sample as a function of temperature.
  2. From the measurements, the conductivity s is to be calculated and plotted against the reciprocal of the temperature T. A linear plot is obtained, from whose slope the energy gap of germanium can be determined.

What you can learn about

  • Semiconductor
  • Band theory
  • Forbidden band
  • Intrinsic conduction
  • Extrinsic conduction
  • Impurity depletion
  • Valence band
  • Conduction band
Document     Filesize
p2530402e.pdf Experiment guide, English 720.9 KB

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