PEEE II- semiconductors

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1) Conductivity

Semiconductors are poor conductors as they have their valance bands filled preventing the flow of electrons. For electric flow to take place, it requires a flow of electrons.

- for electron flow to take place several techniques to modify the properties of semiconductors have been developed.

- doping and gating allows semiconductors to behave like conductive materials

- n-type and p-type prototype were the two outcomes of the modifications

- modifications either add an excess of electrons or decreases the number of electrons

2)

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