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In extrinsic semiconductors
- a)The conduction band and valence band overlap
- b)The gap between conduction band and valence band is more than 16 eV
- c)The gap between conduction band and valence band is near about 1 eV
- d)The gap between conduction band and valence band will be 100 eV and more.
Correct answer is option 'C'. Can you explain this answer?
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In extrinsic semiconductorsa) The con...
Explanation:
Intrinsic vs Extrinsic Semiconductors:
In intrinsic semiconductors, the conduction band and valence band are separated by a larger energy gap compared to extrinsic semiconductors. Extrinsic semiconductors are doped with impurities to increase their conductivity.
Band Gap in Extrinsic Semiconductors:
In extrinsic semiconductors, the gap between the conduction band and valence band is typically around 1 eV. This energy gap allows electrons to move from the valence band to the conduction band when excited, creating free charge carriers and enabling conductivity.
Role of Dopants:
Dopants introduce impurities into the semiconductor crystal lattice, which can alter its electrical properties. For example, donor impurities like phosphorus can create extra electrons in the conduction band, while acceptor impurities like boron can create extra holes in the valence band, increasing conductivity.
Temperature Dependence:
The band gap in extrinsic semiconductors can be influenced by temperature. As temperature increases, some electrons in the valence band gain enough energy to move to the conduction band, leading to higher conductivity.
Applications:
Extrinsic semiconductors are widely used in electronic devices such as diodes, transistors, and integrated circuits due to their controllable conductivity and versatile properties.
In conclusion, the correct answer is option 'C' because the gap between the conduction band and valence band in extrinsic semiconductors is typically around 1 eV, enabling the flow of charge carriers and enhancing conductivity.
Intrinsic vs Extrinsic Semiconductors:
In intrinsic semiconductors, the conduction band and valence band are separated by a larger energy gap compared to extrinsic semiconductors. Extrinsic semiconductors are doped with impurities to increase their conductivity.
Band Gap in Extrinsic Semiconductors:
In extrinsic semiconductors, the gap between the conduction band and valence band is typically around 1 eV. This energy gap allows electrons to move from the valence band to the conduction band when excited, creating free charge carriers and enabling conductivity.
Role of Dopants:
Dopants introduce impurities into the semiconductor crystal lattice, which can alter its electrical properties. For example, donor impurities like phosphorus can create extra electrons in the conduction band, while acceptor impurities like boron can create extra holes in the valence band, increasing conductivity.
Temperature Dependence:
The band gap in extrinsic semiconductors can be influenced by temperature. As temperature increases, some electrons in the valence band gain enough energy to move to the conduction band, leading to higher conductivity.
Applications:
Extrinsic semiconductors are widely used in electronic devices such as diodes, transistors, and integrated circuits due to their controllable conductivity and versatile properties.
In conclusion, the correct answer is option 'C' because the gap between the conduction band and valence band in extrinsic semiconductors is typically around 1 eV, enabling the flow of charge carriers and enhancing conductivity.
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In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer?
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In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer?.
In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for In extrinsic semiconductorsa) The conduction band and valence band overlap b) The gap between conduction band and valence band is more than 16 eV c) The gap between conduction band and valence band is near about 1 eV d) The gap between conduction band and valence band will be 100 eV and more. Correct answer is option 'C'. Can you explain this answer?.
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