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Silicon doped with electron-rich impurit...

Silicon doped with electron-rich impurity forms

A

p-type semiconductor

B

n-type semiconductor

C

intrinsic semiconductor

D

insulator

Text Solution

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The correct Answer is:
B
n-type semiconductor
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which of the following statements are true about semiconductor ? (a)silicon doped with electron rich impurity is a p-type semiconductor (b)Silicon doped with an electrons rich impurity is an n-type semiconductor (c)Delocalised electrons increase the conductivity of doped silicon (d)An electron vacancy increase the conductivity of n- type semiconductor

The conductivity of intrinsic semiconductors can be increased by adding a suitable impurity. This process is called __(P)__. This can be done with an impurity which is __(Q)_ rich or deficient as compared to the semiconductor. Such impurities introduce __(R)__ defects in them. Electron rich impurities result in __(S)__ type semiconductors while electron deficit impurities result in __(T)___ type semiconductors .

A semiconductor is doped with a donor impurity

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Ultra pure silicon is needed by electronic industry. By which method of refining, such a high purity silicon is obtained ?

Pure silicon doped with phosphorus is:

Define the term doping. Pure silicon is an insulator. Silicon doped with phosphorus is a semiconductor. Silicon doped with gallium is also a semi-conductor. What is difference between the two types of semi-conductors ?

In a transistor the base is made very thin and is lightly doped with an impurity, because.

ICSE-SOLID STATE-EXERCISE(PART-I OBJECTIVE QUESTIONS)
  1. What is the coordination number in a square close packed structure in ...

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  2. Which kind of defects are introduced by doping ?

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  3. Silicon doped with electron-rich impurity forms

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  4. Which of the following statements is not true

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  5. Which of the following is not true about the ionic solids?

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  6. A ferromagnetic substance becomes the permanent magnet when it is plac...

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  7. The correct order of the packing efficiency in different types of unit...

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  8. Which of the following defects is also known as dislocation defect?

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  9. In the cubic close packing, the unit cell has

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  10. The edge lengths of the unit cells in terms of the radius of spheres c...

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  11. Which of the following represents correct order of conductivity in sol...

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  12. Correct the following statement by changing the underlined part of the...

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  13. Correct the following statement by changing the underlined part of the...

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  14. Correct the following statement by changing the underlined part of the...

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  15. Correct the following statement by changing the underlined part of the...

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  16. Correct the following statement by changing the underlined part of the...

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  17. Correct the following statement by changing the underlined part of the...

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  18. Correct the following statement by changing the underlined part of the...

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  19. Correct the following statement by changing the underlined part of the...

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  20. Correct the following statement by changing the underlined part of the...

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