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PIN diode is a photosensitive diode because of _______(a) large currentflow in p and nregion(b) depletion layer increases giving a larger surface area(c) stronger covalent bonds(d) low carrier storageI have been asked this question during an interview.My question is based upon p-i-n Diode and its Characteristics in section Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer»

The correct answer is (b) depletion layer increases GIVING a larger surface AREA

The best I can EXPLAIN: An intrinsic layer that is sandwiched between p and n layers. This GIVES a larger surface area making it compatible for photosensitivity. Reverse bias causes an increased depleted region in a PIN diode.



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