Home
Class 12
PHYSICS
Suppose a pure Si crystal has 5 × 10^(28...

Suppose a pure Si crystal has `5 × 10^(28)` atoms `m^(–3)`. It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Given that `n_(i) =1.5 × 10^(16) m^(–3)`.

Text Solution

Verified by Experts

`n_e=5xx10^22 per m^3`
`n_h=4.5xx10^9 per m^3`
Promotional Banner

Topper's Solved these Questions

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section -A (Objective Type question (One option is correct))|50 Videos

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section -B (Objective type question (one option is correct))|29 Videos

  • SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-D (Assertion and reason))|5 Videos

  • SEMICONDUCTOR ELECTRONICS (MATERIAL, DEVICES AND SIMPLE CIRUITS )

    AAKASH INSTITUTE ENGLISH|Exercise Assignment SECTION - D (Assertion & reason type Question)|10 Videos

  • SYSTEM OF PARTICLES AND ROTATIONAL MOTION

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|63 Videos

Similar Questions

Explore conceptually related problems

Suppose a pure Si-crystal has 5xx10^(28) "atoms" m^(-3) . It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Give that n_(i)=1.5xx10^(16)m^(-3) .

Suppose a pure Si-crystal has 5xx10^(28) "atoms" m^(-3) . It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Give that n_(i)=1.5xx10^(16)m^(-3) .

Suppose a pure Si-crystal has 6xx10^(28) "atoms" m^(-3) . It is doped by 1 ppm concentration of pentavalent As. Calculate the number of electrons and holes. Give that n_(i)=1.5xx10^(16)m^(-3) .

The number of silicon atoms per m^(3) is 5xx10^(28) . This is doped simultaneously with 5xx10^(22) atoms per m^(3) of Arsenic and 5xx10^(20) per m^(3) atoms of indium. Calculate the number of electrons and holes. Given that n_(i)=1.5xx10^(16)m^(-3) . Is the material n-type or p-type?

Suppose a 'n'- type wafer is created by doping Si crystal having 5xx10^(28) "atoms"//m^(3) with 1 ppm concentration of As. On the surfabe 200 ppm Boron is added to create 'p' region in this wafer. Considering n_(i)=1.5xx10^(16)m^(-3) , (i) Calculate the densities of the charge carriers in the n & p regions. (ii) Comment which charge carriers would contribute largely for the reverse saturation current when diode is reverse biased.

The rate of first-order reaction is 1.5 xx 10^(-2) M "min"^(-1) at 0.5 M concentration of reactant. The half-life of reaction is

In an atom, the total number of electrons having quantum number n = 4, |m_(l)| = 1 and m_(s) = - (1)/(2) is

Find the order of magnitude of the number of atom in 1cm^(3) of a solid. Given that the diameter of an atom is about 10^(-10)m

A wire of radius 10^(-3)m and length 2m is stretched by a force of 50 N. Calculate the fundamental frequency of the note emitted by it. Density of wire is 1.6. xx 10^(3)" kg m"^(-3) .

A potential difference of 2.5 V is applied across the faces of a germanium crystal plate. The face area of the crystal is 1 cm^(2) and its thickness is 1.0 mm . The free electron concentration in germanium is 2 xx 10^(19)m^(-3) and the electron and holes mobilities are 0.33m^(2)/V s and 0.17 m^(2)/V s respectively. The current across the plate will be

AAKASH INSTITUTE ENGLISH-SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS-Try yourself
  1. In semiconductors at a room temperature

    Text Solution

    |

  2. Carbon, silicon and germanium have four valence electrons each. These ...

    Text Solution

    |

  3. In a pure semiconductor the number of conduction electrons is 6xx10^(1...

    Text Solution

    |

  4. C, Si and Ge have same lattice structure. Why is C insulator while Si ...

    Text Solution

    |

  5. A semiconductor is known to have an electron concentration of 6xx10^(1...

    Text Solution

    |

  6. Suppose a pure Si crystal has 5 × 10^(28) atoms m^(–3). It is doped by...

    Text Solution

    |

  7. What is the current through an ideal p-n junction diode shown in figur...

    Text Solution

    |

  8. Out of following which one is a forward biased diode

    Text Solution

    |

  9. Can we take one slab of p-type semiconductor and physically join it to...

    Text Solution

    |

  10. The V-I characteristic of a silicon diode is shown in the Fig. 14.17. ...

    Text Solution

    |

  11. Freuency of given AC signal is 50 Hz. When it connected to a half - wa...

    Text Solution

    |

  12. What is the output form of full-wave rectifier ?

    Text Solution

    |

  13. In a Zener regulated power supply a Zener diode with V(Z) = 6.0 V is u...

    Text Solution

    |

  14. The current in the forward bias is known to be more (-mA) than the cur...

    Text Solution

    |

  15. Why are Si and GaAs are preferred materials for solar cells?

    Text Solution

    |

  16. For a CE transistor amplifier, the audio signal voltage across the col...

    Text Solution

    |

  17. In common emitter transistor as shown in Fig., the V(BB) supply can be...

    Text Solution

    |

  18. Show the output waveform of OR gate for the following input waveforms ...

    Text Solution

    |

  19. Sketch the output waveform obtained from AND gate for the following in...

    Text Solution

    |

  20. Sketch the output wavefrom Y from a NAND gate having following inputs ...

    Text Solution

    |