Electron-Hole Separation in Semiconductors
6 Questions
0 Views

Choose a study mode

Play Quiz
Study Flashcards
Spaced Repetition
Chat to lesson

Podcast

Play an AI-generated podcast conversation about this lesson

Questions and Answers

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?

  • 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?

  • 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?

    <p>Because both n and p contain the excess carrier concentration</p> Signup and view all the answers

    What type of differential equation is the ambipolar transport equation?

    <p>Nonlinear differential equation</p> Signup and view all the answers

    How much internal electric field is required to keep the excess electrons and holes drifting and diffusing together?

    <p>A relatively small internal electric field</p> Signup and view all the answers

    More Like This

    Use Quizgecko on...
    Browser
    Open
    Browser
    Browser