Diffusion current can be correlated with different condition by
Answers
Answer:
The diffusion current density is directly proportional to the concentration gradient. Concentration gradient is the difference in concentration of electrons or holes in a given area. If the concentration gradient is high, then the diffusion current density is also high.
Answer:
Diffusion current can occur in semiconductors that are not uniformly doped because, in non-uniformity, only the majority and minority concentrations can be found, allowing the movement of carriers from higher to lower concentrations to be observed.
Recombination occurs when electrons travel from a higher concentration area to a lower concentration area, achieving homogeneity and generating current in the process.
If n-type electrons are moving from a higher concentration to a lower concentration, p-type holes are moving from a higher concentration to a lower concentration. Both drift and diffusion occur in semiconductors, although diffusion happens mostly without the intervention of external voltage.