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A piece of intrinsic (pure) silicon at room temperature has, at any instant, a number of conduction-band (free) electrons bthat are unattached to any atom and are essentially drifting randomly throughout the material. Also, and equal number of holes are created in the valence band when these electrons jump into the conductance band.

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12y ago
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14y ago

All of them it depends strictly on the application

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14y ago

Semiconductors have a resistivity value between that of a conductor and an insulator.

http://en.wikipedia.org/wiki/Semi_conductor

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Q: What properties are desirable in semiconductors?
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