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The valency of impurity element for maki...

The valency of impurity element for making p-type semiconductors is

A

`5`

B

`4`

C

`3`

D

`7`

Text Solution

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The correct Answer is:
C
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NARAYNA-SEMI CONDUCTOR DEVICES-C.U.Q
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  2. Carbon , silicon and germanium have four valence elcectrons each . The...

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  3. The valency of impurity element for making p-type semiconductors is

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  4. In n-type semiconductors the electron concentration is equal to

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  5. Which of the following statements is not true ?

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  6. p-type semiconductor is

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  7. n-type semiconductor is

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  8. An electric field is applied across a semiconductor. Let n be the numb...

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  9. In a n-type semiconductor, the femi energy level lies

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  10. An n-type and p-type silicon can be obtained by doping pure silicon wi...

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  11. The width of forbidden gap in silicon crystal is 1.2 ev. When the crys...

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  12. In extrinsic semiconductors

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  13. The element that can be used as acceptor impurity to dope silicon is

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  14. Among the following, the wrong statement on the case of semiconductor ...

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  15. The value indicated by fermi energy level in an intrinsic semiconducto...

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  16. The conduction band and valency band of a good conductors are

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  17. Two pieces one of germinium and the other of aluminium are cooled from...

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  18. In intrinsic semiconductor at room temperature the no. of electrons an...

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  19. Band gap in insulator is of the order

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  20. In p-type semiconductor conduction in due to

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