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why does the electrical conductivity of semiconductors increse with rise in temperature?

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Electrical conductivity of a semiconductor

Electrical conductivity of a semiconductor

The electrical conductivity of semiconductor is

The conductivity of a semiconductor increases with increase in temperature because

The conductivity of a semiconductor increases with increase in temperature because

Assertion (A) : The electrical conductivity of a semiconductor increases with increase in temperature. Reason (R ) : With increase in temperature, large number of electrons from the valence band can jump to the conduction band.

Statement I : Electrical conductivity of semiconductors increases with rise in temperature. Statement II : There is a small energy gap between conduction band and valence band.

MODERN PUBLICATION-SOLID STATE-REVISION EXERCISES (SHORT ANSWER QUESTIONS)
  1. IMPERFECTIONS IN SOLIDS

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  2. (a) Define ferromagnetism and ferrimagnetism. (b) Differentiate betw...

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  3. why does the electrical conductivity of semiconductors increse w...

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  4. (i) What is a semiconductor ? Mention two main types of semiconductors...

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  5. (a) Give two differences between ferromagnetic and anti-ferromagnetic ...

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  6. (a) NaCl has fcc structure. Calculate the number of NaCl units in a un...

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  7. What type of semi-conductor is produced when silicon is doped with bor...

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  8. Examine the given defective crystal {:(A^(+), B^(-),A^(+),B^(-),A^(+...

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  9. Explain the following (i) F - centres (ii)Doping .

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  10. Write two points of distinction between crystalline and amorphous soli...

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  11. Distinguish between crystal lattice and unit cell.

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  12. (a) Briefly discuss Schottky defect and give examples. (b) Calculate...

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  13. Define ferromagnetism and ferrimagnetism .

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  14. Unit cells can be divided into two categories, primitive and centred u...

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  15. Calculate the percentage of packing efficiency in simple cubic unit ce...

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  16. Example the following with suitable examples: a. Ferromagnetism b. P...

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  17. (a) Defince the following terms : (i) F-centre (ii) Unit cell (...

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  18. Write two points of distinction between Schottky and Frenkel defects.

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  19. Write two points of distinction between crystalline and amorphous soli...

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  20. Which of the following lattices has the highest packing efficency (a) ...

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