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A semiconductor of thickness 0.5μm is illuminated with monochromatic light of hϑ = 2eV, and the absorption coefficient of semiconductor ⋅α = −5 × 104cm−1. If the incident power is 10mW ( Assume semiconductor has perfect quantum efficiency ) then number of photons given from recombination events per second is photons/sec ,
  • a)
    2.87 × 1016
  • b)
    3.56 × 1016
  • c)
    4.98 ×1016
  • d)
    5.57 ×1016
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
A semiconductor of thickness 0.5μm is illuminated with monochromatic ...
I = I0e−αl
= 10−2exp⁡(−5×10−4×0.5×10−4)
= 0.82mW
Total energy absorbed = 10 − 0.82 = 9.18mW
Number of photons emitted =
= 2.8687 × 1016 photons/sec
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A semiconductor of thickness 0.5μm is illuminated with monochromatic light of hϑ = 2eV, and the absorption coefficient of semiconductor ⋅α = −5 × 10−4cm−1. If the incident power is 10mW ( Assume semiconductor has perfect quantum efficiency ) then number of photons given from recombination events per second is photons/sec ,a)2.87 × 1016b)3.56 × 1016c)4.98 ×1016d)5.57 ×1016Correct answer is option 'A'. Can you explain this answer?
Question Description
A semiconductor of thickness 0.5μm is illuminated with monochromatic light of hϑ = 2eV, and the absorption coefficient of semiconductor ⋅α = −5 × 10−4cm−1. If the incident power is 10mW ( Assume semiconductor has perfect quantum efficiency ) then number of photons given from recombination events per second is photons/sec ,a)2.87 × 1016b)3.56 × 1016c)4.98 ×1016d)5.57 ×1016Correct answer is option 'A'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about A semiconductor of thickness 0.5μm is illuminated with monochromatic light of hϑ = 2eV, and the absorption coefficient of semiconductor ⋅α = −5 × 10−4cm−1. If the incident power is 10mW ( Assume semiconductor has perfect quantum efficiency ) then number of photons given from recombination events per second is photons/sec ,a)2.87 × 1016b)3.56 × 1016c)4.98 ×1016d)5.57 ×1016Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for A semiconductor of thickness 0.5μm is illuminated with monochromatic light of hϑ = 2eV, and the absorption coefficient of semiconductor ⋅α = −5 × 10−4cm−1. If the incident power is 10mW ( Assume semiconductor has perfect quantum efficiency ) then number of photons given from recombination events per second is photons/sec ,a)2.87 × 1016b)3.56 × 1016c)4.98 ×1016d)5.57 ×1016Correct answer is option 'A'. Can you explain this answer?.
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