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2 cards from this section. Quick, good the night before a test.
What is a p-n junction?
Think about the types of semiconductor materials.
What causes the diffusion current?
Remember how particles behave in a concentration gradient.
What is the result of the diffusion process in a p-n junction?
Think about the overall changes at the junction.
True or False: The drift current is always greater than the diffusion current in a p-n junction.
Consider what happens when both currents start interacting.
Consider a p-n junction diode with a large applied forward voltage. Explain the expected behavior of the current and what it indicates about the state of the junction.
Focus on the relationship between voltage and current in a diode.
Calculate the thickness of the depletion region if the concentration of dopants in the n-side is 10^15/cm^3 and in the p-side is 5x10^14/cm^3. Assume ideal conditions.
Look at the relationships between doping levels and depletion width.
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