Question:
In an unbiased p-n junction, holes diffuse from the p-region to n-region because (a) free electrons in the n-region attract them. (b) they move across the junction by the potential difference. (c) hole concentration in p-region is more as compared to n-region. (d) All the above.
Answer:
Larger concentration means majority charge carriers , diffusion takes place due to diff in the concentration and is always from the region of higher concentration to lower concentration. so in the p-type holes are majority charge carriers. Therefore diffusion takes place from p-type to N-type in the case of holes.
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