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Semiconductor Electronics question

2005 · Q149
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Semiconductor Electronics question

2005 · Q149

NEETPhysicsSemiconductor ElectronicsMCQ+4 / −1
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?
  1. A
    (Eg)C > (Eg)Si
  2. B
    (Eg)C < (Eg)Si
  3. C
    (Eg)C = (Eg)Si
  4. D
    (Eg)C < (Eg)Ge.
View written solutionFree

Correct answer: A

Band gap of carbon is 5.5 eV while that of silicon is 1.1 eV

∴\therefore∴ (Eg)C >\gt > (Eg)Si

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