Carbon,silicon,and germanium atoms have four | vedclass

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Question

(A) The energy band gap $(Eg)$ is the energy difference between the valence band and the conduction band. For Carbon (diamond),the band gap is approxi

Vedclass · Accepted Answer

$(Eg)_C > (Eg)_{Si}$

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(A) The energy band gap $(Eg)$ is the energy difference between the valence band and the conduction band. For Carbon (diamond),the band gap is approximately $5.5 \, eV$. For Silicon,the band gap is approximately $1.1 \, eV$. For Germanium,the band gap is approximately $0.7 \, eV$. Comparing these values,we find that $(Eg)_C > (Eg)_{Si} > (Eg)_{Ge}$. Therefore,the relationship $(Eg)_C > (Eg)_{Si}$ is true.

Carbon,silicon,and germanium atoms have four valence electrons each. Their valence and conduction bands are separated by energy band gaps represented by $(Eg)_C$,$(Eg)_{Si}$,and $(Eg)_{Ge}$ respectively. Which one of the following relationships is true in their case?

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