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An optical pulse containing 6 × 106 photons is incident on a photodiode and 4.5 × 106 electron-hole pairs are created

October 11, 2023
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An optical pulse containing 6 × 106 photons is incident on a photodiode and 4.5 × 106 electron-hole pairs are created

Q. An optical pulse containing 6 × 106 photons is incident on a photodiode and 4.5 × 106 electron-hole pairs are created. The maximum possible quantum efficiency (in %) of the photodiode is

Ans: 75

Sol:

Number of incident photons ′N′=6×106

Number of electron-hole pairs generated

n=4.5×106

Quantum efficiency of photo-diode

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