6 Questions
What happens to the excess electrons and holes in a semiconductor with an applied electric field?
They tend to drift in opposite directions
What is the effect of the internal electric field on the electrons and holes?
It creates a force attracting them back toward each other
What is the term for the phenomenon where electrons and holes drift or diffuse together?
Ambipolar diffusion or ambipolar transport
Why are the coefficients in the ambipolar transport equation not constants?
Because both n and p contain the excess carrier concentration
What type of differential equation is the ambipolar transport equation?
Nonlinear differential equation
How much internal electric field is required to keep the excess electrons and holes drifting and diffusing together?
A relatively small internal electric field
Learn about the behavior of excess electrons and holes in a semiconductor with an applied electric field. Understand how they drift and interact with each other. A key concept in electronic devices and circuits.
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