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In a semiconducting material the mobilit...

In a semiconducting material the mobilities of electrons and holes are `mu_(e )` and `mu_(h)` respectively. Which of the following is true?

A

an insulator

B

a metal

C

a n-type semiconductor

D

a p-type semiconductor

Text Solution

Verified by Experts

The correct Answer is:
D
a p-type semiconductor

According to figure the energy level of acceptor is slightly higher than that of energy level `E_(2)` of valence band of p-type semiconductor. If little energy is given to electron, electron jumps from valence band to acceptor (energy `E_(A)`) level and converts the acceptor impurity into a negative ion.
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KUMAR PRAKASHAN-SEMICONDUCTOR ELECTRONICS : MATERIALS, DEVICES AND SIMPLE CIRCUITS -Section-D : Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams)
  1. An AND gate is followed by a NOT gate in series with two inputs A and ...

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  2. Justify the output waveform (Y) of the OR gate for the following input...

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  3. In a semiconducting material the mobilities of electrons and holes are...

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  4. A p-n photodiode is made of a material with a band gap of 2.0 eV. The ...

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  5. Obtain the resonant frequency and Q-factor of a series LCR circuit wit...

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  6. A gas in equilibrium has uniform density and pressure throughout its v...

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  7. A p-n photodiode is fabricated from a semiconductor with a band gap o...

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  8. Which one of the following statement is false?

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  9. Which of the following device acts a complete electronic circuit?

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  10. Which of the following statement is true for the forward bias of a p-n...

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  11. If a small amount of antimony is added to germanium crystal ………

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  12. Pure Si at 500 K has equal number of electron (n(e )) and hole (n(h)) ...

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  13. Keeping forward bias voltage from 0.6 V to 0.7 V in a p-n junction dio...

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  14. In a CE transistor amplifier, the audio signal voltage across the coll...

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  15. C and Si both have same lattice structure, having 4 bonding electrons ...

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  16. When the inputs of a two input logic gate are 0 and 0, the output is 1...

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  17. Justify the output waveform (Y) of the OR gate for the following input...

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  18. The output of the given circuit in figure.

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  19. In a n-type semiconductor, which of the following statement is true?

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  20. The potential barrier of the p-n junction depends …….. (i) On kind o...

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