Properties of Semiconductors: Practice Problem & Solution
Consider the following statements (i) An intrinsic semiconductor will behave as insulator at \(T = 0text{ K}\). (ii) Doping pure silicon with trivalent impurities gives p-type semiconductors. (iii) The majority carriers in n-type semiconductors are electrons. (iv) Solar cell works when it is in forward bias. The correct statements(s) is/are
Solution Explained:
To solve this problem, we apply the core principles of Properties of Semiconductors. Understanding the underlying formula is key to arriving at the correct answer below:
At \(T = 0text{ K}\), all electrons are in the valence band, so an intrinsic semiconductor acts as an insulator. Trivalent doping creates p-type, and n-type has majority electron carriers. Solar cells do not require external bias to operate. Thus, statements (i), (ii), and (iii) are correct.
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