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प्रश्न
Answer the following question.
Explain the three processes involved in solar cell working.
उत्तर
The generation of emf by a solar cell, when light falls on, it is due to the following three basic processes: generation, separation and collection
- generation of e-h pairs due to light (with hν > Eg) close to the junction
- separation of electrons and holes due to electric field of the depletion region. Electrons are swept to n-side and holes to p-side
- the electrons reaching the n-side are collected by the front contact and holes reaching the p-side are collected by the back contact. Thus the p-side becomes positive and the n-side becomes negative giving rise to photo-voltage.
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संबंधित प्रश्न
Using the necessary circuit diagrams, show how the V-I characteristics of a p-n junction are obtained in
Forward biasing
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(A) 0.5 nm to 1 nm
(B) 5 nm to 10 nm
(C) 50 nm to 500 nm
(D) 500 nm to 1000 nm
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Choose the correct answer from given options
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