Which of the following material is used to build photovoltaic cells?(a) selenium(b) celenuim(c) silicon(d) ironThe question was asked in homework.Enquiry is from Photoelectric Transducers in chapter Physiological Transducers of Biomedical Instrumentation

Which of the following material is used to build photovoltaic cells?(a

1.	Which of the following material is used to build photovoltaic cells?(a) selenium(b) celenuim(c) silicon(d) ironThe question was asked in homework.Enquiry is from Photoelectric Transducers in chapter Physiological Transducers of Biomedical Instrumentation
Answer» Correct option is (a) selenium For explanation I would SAY: Photovoltaic or barrier layer cells usually consist of a semiconducting substance, which is generally selenium deposited on a metal base which may be iron and which acts as one of the ELECTRODES. The semiconducting substance is COVERED with a thin layer of SILVER or gold deposited by cathodic deposition in a vacuum. This layer acts as a COLLECTING electrode.

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