14.4.1 - n-type semiconductor
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Practice Questions
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What is an n-type semiconductor?
💡 Hint: Think about the type of charge carriers.
Name one common pentavalent dopant.
💡 Hint: Think about common elements in the fifth group of the periodic table.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is an n-type semiconductor?
💡 Hint: Remember that 'n' stands for negative.
True or False: Doping increases the number of holes in an n-type semiconductor.
💡 Hint: Consider what happens when you add electrons.
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Challenge Problems
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A sample of silicon is doped with arsenic at a concentration of 1 × 10^18 atoms/m^3. Calculate the number of conduction electrons assuming all dopant atoms contribute one free electron each.
💡 Hint: Use the relationship between dopant concentration and the number of free electrons.
Explain how the presence of extra electrons in an n-type semiconductor changes its behavior when exposed to an electric field compared to an intrinsic semiconductor.
💡 Hint: Think about how the electric field influences movement of charge carriers differently.
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