The energy gaps (E_g) between the valence ban | vedclass

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Question

(A) The energy gap $(E_g)$ is the energy difference between the top of the valence band and the bottom of the conduction band.For diamond, the energy

Vedclass · Accepted Answer

$E_g$ (diamond)  >  $E_g$ (silicon)  >  $E_g$ (germanium)

Vedclass · Answer

(A) The energy gap $(E_g)$ is the energy difference between the top of the valence band and the bottom of the conduction band.For diamond, the energy gap is approximately $6.0 \, eV$.For silicon, the energy gap is approximately $1.1 \, eV$.For germanium, the energy gap is approximately $0.72 \, eV$.Comparing these values, we have $6.0 \, eV  >  1.1 \, eV  >  0.72 \, eV$.Therefore, the order is $E_g$ (diamond)  >  $E_g$ (silicon)  >  $E_g$ (germanium).

The energy gaps $(E_g)$ between the valence band and conduction band for diamond, silicon, and germanium are in the order:

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