The correct sequence of band gaps of germanium siliconand gallium arsenidewill :

a)

b)

c)

d)

Correct answer is option 'C'. Can you explain this answer?

Question

The correct sequence of band gaps of germaniumsiliconand gallium arsenidewill :a)b)c)d)Correct answer is option 'C'. Can you explain this answer?

Accepted Answer

Correct Answer :- C

Explanation : It generally refers to the energy difference (in electron volts) between the top of the valence band and the bottom of the conduction band in insulators and semiconductors. The energy band gaps of silicon and germanium are 1.1eV and 0.

The band gap of GaAs results in efficient emission of infrared light at 1.424 eV.

Answer

Gallium arsenide has max band gap but in between Si and Ge, I have read that Ge has 0.7eV Eg and Si has 1.1eV Eg so answer b should be correct

Answer

GaAs has maximum band gap i.e 1.424 and then Si and Ge has minimum band gap i.e 0.7ev so option B should be correct..

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