5 Questions
Explain the electrical conductivity of a semiconductor and how it compares to that of a conductor and an insulator.
A semiconductor has an electrical conductivity value between that of a conductor and an insulator. Its resistivity falls as its temperature rises, unlike metals which behave in the opposite way.
How can the conducting properties of a semiconductor be altered in useful ways?
The conducting properties of a semiconductor can be altered by introducing impurities ('doping') into the crystal structure.
What is created when two differently doped regions exist in the same crystal?
A semiconductor junction is created.
What are the basis of diodes, transistors, and most modern electronics in relation to semiconductors?
The behavior of charge carriers, including electrons, ions, and electron holes, at semiconductor junctions is the basis of diodes, transistors, and most modern electronics.
Name some examples of semiconductors mentioned in the text.
Some examples of semiconductors are silicon, germanium, gallium arsenide, and elements near the so-called 'metalloid staircase' on the periodic table.
Test your knowledge of semiconductors with this quiz. Explore the unique electrical properties, doping, and temperature behavior of these materials.
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