Pure intrinsic silicon () doped with a Group 15 element such as phosphorus () produces a material defined as:

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Question

Pure intrinsic silicon ($Si$) doped with a Group 15 element such as phosphorus ($P$) produces a material defined as:

Prashant Kotian · Accepted Answer

Correct answer: B. Group 15 dopants such as phosphorus have five valence electrons. Four are used in covalent bonding with silicon, and the extra electron becomes available for conduction. Since electrons are the majority carriers, the semiconductor is n-type.

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