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3 cards from this section. Quick, good the night before a test.
What is an n-type semiconductor?
Think about the type of charge carriers.
Name one common pentavalent dopant.
Think about common elements in the fifth group of the periodic table.
What is an n-type semiconductor?
Remember that 'n' stands for negative.
True or False: Doping increases the number of holes in an n-type semiconductor.
Consider what happens when you add electrons.
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.
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.
Think about how the electric field influences movement of charge carriers differently.
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