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In a semiconductor, what is the role of doping?
Practice Questions
Q1
In a semiconductor, what is the role of doping?
To increase the electrical resistance.
To create free charge carriers.
To decrease the band gap.
To make the material more opaque.
Questions & Step-by-Step Solutions
In a semiconductor, what is the role of doping?
Steps
Concepts
Step 1: Understand that a semiconductor is a material that can conduct electricity, but not as well as a metal.
Step 2: Know that pure semiconductors have very few charge carriers (electrons or holes) that help conduct electricity.
Step 3: Learn that doping means adding small amounts of other materials (impurities) to the semiconductor.
Step 4: Recognize that these impurities can either add extra electrons (n-type doping) or create holes (p-type doping).
Step 5: Realize that by increasing the number of charge carriers, doping makes the semiconductor better at conducting electricity.
No concepts available.
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