Question

what is diffusion current? semiconductors class 12

Answer 1

Diffusion current is a current in asemiconductor caused by thediffusion of charge carriers (holes and/or electrons). This is the currentwhich is due to the transport of charges occurring because of non-uniform concentration of charged particles in a semiconductor.


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Answer 2

Answer

1. When the electrons from the n-side of a junction migrate on the p-side they leave behind positively recharge donor ions on n-side
2. Effectively, holes from p-side migrate into n-side
3. In p-type region near the junction there are negatively charged acceptor ions
4. In the n-type region near the junction there are positively charged donor ions
5. the transfer of electrons and holes occurs with p-n junction is called diffusion

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