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Question: Answered & Verified by Expert
In an unbiased p - n junction electrons diffuse from n-region to p-region because:
PhysicsSemiconductorsNEET
Options:
  • A electrons travel across the junction due to potential difference
  • B only electrons move from n to p region and not the vice - versa
  • C electron concentration in n - region is more as compared to that in p - region
  • D holes in p - region attract them
Solution:
2782 Upvotes Verified Answer
The correct answer is: electron concentration in n - region is more as compared to that in p - region
In a p-n junction diffusion occurs due to spontaneous movement of majority charge carrier from the region of high concentration to low concentration.

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