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Extrinsic Semiconductors

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Question

what is the order of energy gap in metal ,semiconductor and insulator.

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Solution

Dear Student ,
The order of energy gap in metal , semi conductor and insulators are :
Insulator > Semi conductor > metal .
Insulator has the largest energy gap which is more than 2 eV , in case of semi conductors it is 0.7 to 1.1 eV and in case of the metals it is , less than 0.5 eV .
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