Question

8. Calculate the energy band gap of semiconducting døde
which emit laser of wavelength 8000 A​

Answer 1

Answer:

A semiconductor diode laser has a peak emission wavelength of 1.55 μm. Find its band gap in eV.

(Set-2–May 2008)

Sol: Energy gap of semiconductor, Eg = energy of emitted photon, hν

images where c = velocity of light = 3 × 108 m/s

Wavelength, λ = 1.55 μm = 1.55 × 16-6 m

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