In an unblased p-n junction, holes diffuse from the p - region to n- region because

Options

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.

Explanation

In an unbiased p-n junction, the diffusion of charge carriers across the junction takes place from higher concentration to lower concentration. Thus