In an unbiased p–n junction, holes diffuse from the p-region to the n-region because:
Options

Question

In an unbiased p–n junction, holes diffuse from the p-region to the n-region because:

G1 Physics · Accepted Answer

Initially p-region has far more holes than n-region. Concentration-gradient diffusion drives holes from high concentration to low concentration across the junction. Fixed ions left behind create the built-in depletion field. Final answer: Option B.