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Questions and Answers
What happens to the excess electrons and holes in a semiconductor with an applied electric field?
What happens to the excess electrons and holes in a semiconductor with an applied electric field?
- They cancel each other out
- They tend to drift in opposite directions (correct)
- They move in the same direction
- They remain stationary
What is the effect of the internal electric field on the electrons and holes?
What is the effect of the internal electric field on the electrons and holes?
- It creates a force attracting them back toward each other (correct)
- It repels them further apart
- It has no effect on them
- It accelerates their drift in opposite directions
What is the term for the phenomenon where electrons and holes drift or diffuse together?
What is the term for the phenomenon where electrons and holes drift or diffuse together?
- Electric field flow
- Electron-hole recombination
- Ambipolar diffusion or ambipolar transport (correct)
- Semiconductor drift
Why are the coefficients in the ambipolar transport equation not constants?
Why are the coefficients in the ambipolar transport equation not constants?
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What type of differential equation is the ambipolar transport equation?
What type of differential equation is the ambipolar transport equation?
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How much internal electric field is required to keep the excess electrons and holes drifting and diffusing together?
How much internal electric field is required to keep the excess electrons and holes drifting and diffusing together?
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