Semiconductor physics

Which value is closest to the relative permittivity of silicon?

  1. AAbout 11.7
  2. BAbout 80
  3. CAbout 3.9
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Answer: A. About 11.7

The relative permittivity of silicon is about 11.7. It is used in calculations of depletion width and junction capacitance. About 3.9 is the relative permittivity of silicon dioxide (SiO2); high-k materials have larger values. About 80 is that of water.

  • A. Correct. The relative permittivity of silicon is about 11.7.
  • B. About 80 is the relative permittivity of water.
  • C. About 3.9 is the relative permittivity of silicon dioxide (SiO2).
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More Semiconductor physics questions

  1. Which value is closest to the electron mobility in lightly doped silicon at room temperature?
  2. In an indirect-gap semiconductor such as silicon, why is the probability of electron-hole recombination with light emission low?
  3. In a semiconductor driven out of thermal equilibrium by illumination or current injection, what are the levels introduced to describe the electron and hole densities separately?
  4. Which value is closest to the lattice constant of crystalline silicon?
  5. Why is the intrinsic Fermi level of silicon slightly offset from the exact center of the band gap?