Home
Class 11
PHYSICS
A pure silicon crystal has 4 xx 10^28 at...

A pure silicon crystal has `4 xx 10^28` atoms `m^-3`. It is droped by 1ppm concentration of antimony. Calculate the number of electrons and holes `n_i = 1.2 xx 10^16//m^3`

Promotional Banner

Topper's Solved these Questions

  • OPTICS

    CHETANA PUBLICATION|Exercise EXERCISE|80 Videos
  • SOUND

    CHETANA PUBLICATION|Exercise EXERCISE|145 Videos

Similar Questions

Explore conceptually related problems

A certain particle carries 2.5 xx 10^-16C of static electric charge. Calculate the number of electrons present in it.

A photon of wavelength 4 xx 10^-7 m strikes on metal surface, the work function of the metal being 2.15eV. Calculate The velocity of the Photoelectron. (1ev = 1.6020 xx 10^-19 J)

A pure silicon crystal at temperature of 300K has electron and hole concentration 1.5 xx 10^16 m^-3 each (n_c =n_h) . Doping by indium increase (n_e = n_h) to 4.5 xx 10^22 m^-3 . Calculate n_e for the doped silicon crystal.

The speed of light is 3 xx 10^8m//sec . Calculate the frequency of red light of wavelength of 6.5 xx 10^-7 m.

Calculate the number of moles in the following: Mole of 3.2 times 10^(24) atoms of calcium

Find the steady curent flowing through a metal wire when 3 xx 10^8 electron pass across a cross-section of the wire in one minute. (Charge on an electron = 1.6 xx 10^-9 C)

in a pure silicon ( n_i = (10^16)/m^3) crystal at 300 k , 10^21 atoms of phosphorous are added percubic meter. The new hole concetaration wil be.

CHETANA PUBLICATION-SEMICONDUCTORS-EXERCISE
  1. Why is the conductivity of N-type semiconductor greater than that of P...

    Text Solution

    |

  2. Distinguish between intrinsic semiconductors and extrinsic semiconduct...

    Text Solution

    |

  3. A pure silicon crystal has 4 xx 10^28 atoms m^-3. It is droped by 1ppm...

    Text Solution

    |

  4. A pure silicon crystal at temperature of 300K has electron and hole co...

    Text Solution

    |

  5. What is P-N Junction

    Text Solution

    |

  6. Define Depletion layer

    Text Solution

    |

  7. Define Barrier potential

    Text Solution

    |

  8. What is P-N Junction ? Explain construction and working of P-N Junctio...

    Text Solution

    |

  9. Explain the importance of the depletion region in a P-N junction diode...

    Text Solution

    |

  10. Distinguish between forward bias and reverse

    Text Solution

    |

  11. What causes a larger current through a P-N junction diode when forward...

    Text Solution

    |

  12. How is a P-N junction diode fabricated?

    Text Solution

    |

  13. What do you mean by P-N junction diode?

    Text Solution

    |

  14. Draw the labelled symbol for a Junction diode.

    Text Solution

    |

  15. Explain different ways of connecting a P-N junction diode with cell.

    Text Solution

    |

  16. What happenstopotential barrier and depletion layer in forward biased ...

    Text Solution

    |

  17. With a neat labelled diagram Explain V-I characteristics of P-N juncti...

    Text Solution

    |

  18. What is avalanche breakdown for a P-N junction diode in reversed biase...

    Text Solution

    |

  19. Explain the concept of zero biased junction diode and dynamic equilibr...

    Text Solution

    |

  20. What is knee voltage in P-N junction forward biased divide?

    Text Solution

    |