EC > GATE 2026 > Optoelectronic Devices
Consider an LED based on a direct bandgap semiconductor material with energy bandgap 1.3 eV.
Given: Plank’s constant, h = 6.63 × 10−34 J s and speed of light in free space is 3 × 108 m s−1.
In which of the following wavelength ranges the LED will NOT emit?
Given: Plank’s constant, h = 6.63 × 10−34 J s and speed of light in free space is 3 × 108 m s−1.
In which of the following wavelength ranges the LED will NOT emit?
Correct :
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