What type of semiconductor is formed when silicon is doped with phosphorus?

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Question: What type of semiconductor is formed when silicon is doped with phosphorus?

Options:

Correct Answer: n-type

Solution:

Doping silicon with phosphorus creates an n-type semiconductor due to the extra electrons contributed by phosphorus.

What type of semiconductor is formed when silicon is doped with phosphorus?

What type of semiconductor is formed when silicon is doped with phosphorus?

Step 1: Understand what doping means. Doping is the process of adding impurities to a semiconductor to change its electrical properties.
Step 2: Know what silicon is. Silicon is a common semiconductor material used in electronics.
Step 3: Learn about phosphorus. Phosphorus is a type of element that has five electrons in its outer shell.
Step 4: Recognize that silicon has four electrons in its outer shell. When silicon is doped with phosphorus, the phosphorus atom will bond with silicon but will have one extra electron.
Step 5: Identify the extra electron. This extra electron from phosphorus is free to move around, which increases the electrical conductivity of the silicon.
Step 6: Conclude that this type of semiconductor is called n-type. The 'n' stands for negative, referring to the extra negative charge carriers (electrons) provided by the phosphorus.

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