The p-n Junction Diode
• A p-n junction diode is a widely used semiconductor device • In an electrical circuit, a diode passes current in only one direction (not the other) • A p-n junction diode is simply created by physically joining an n-type and a p-type semiconductor together
→ electrons and holes recombine at the junction
→ Electric field created and directed towards p-side, slowing the electron/hole diffusion process
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