Physics - Semiconductors Question with Solution | TestHub

PhysicsSemiconductorsPhysics of semiconductorMedium2 minQB

PhysicsMediumsingle choice

The energy of a photon of sodium light ( $λ = 5890 \overset{˚}{A}$ ) equals the band gap of a semiconductor. The minimum energy required to create an electron-hole pair is

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Answer:

Solution:

Convert the wavelength:

$λ = 5890 \overset{˚}{A} = 589 nm$

$E_{g} = \frac{h c}{λ} = \frac{1240}{589} = 2.1 eV$

Pair creation requires at least this band-gap energy.

Stream:JEESubject:PhysicsTopic:SemiconductorsSubtopic:Physics of semiconductor

⏱ 2mℹ️ Source: QB

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