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In a pure semiconductor crystal, if current flows due to breakage of crystal bonds, then what is the semiconductor is called?
- a)Acceptor
- b)Donor
- c)Intrinsic semiconductor
- d)Extrinsic semiconductor
Correct answer is option 'C'. Can you explain this answer?
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Most Upvoted Answer
In a pure semiconductor crystal, if current flows due to breakage of c...
Pure semiconductors are called intrinsic semiconductors. The number of electrons in the conduction band will be equal to the number of holes in the valence band. Intrinsic semiconductors are also called undoped and i-type semiconductors.
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In a pure semiconductor crystal, if current flows due to breakage of c...
Explanation:
- Intrinsic Semiconductor:
In a pure semiconductor crystal, if current flows due to the breakage of crystal bonds, the semiconductor is called an intrinsic semiconductor.
- Breakage of Crystal Bonds:
In an intrinsic semiconductor, the current flows when covalent bonds are broken due to thermal energy, creating free charge carriers (electrons and holes).
- Electron-hole Pair Generation:
When a covalent bond breaks, an electron is released, leaving behind a hole. These electron-hole pairs are responsible for conduction.
- Energy Band Structure:
In an intrinsic semiconductor, the valence band is filled with electrons, and the conduction band is empty at absolute zero temperature.
- Temperature Effect:
As the temperature increases, more covalent bonds break, generating more electron-hole pairs and increasing the conductivity of the intrinsic semiconductor.
- Examples:
Silicon and germanium are examples of intrinsic semiconductors commonly used in electronic devices.
- Controlled Properties:
The conductivity of intrinsic semiconductors can be controlled by doping with specific impurities to create extrinsic semiconductors.
- Conclusion:
In summary, an intrinsic semiconductor is a pure semiconductor crystal where current flows due to the breakage of crystal bonds, leading to the generation of electron-hole pairs for conduction.
- Intrinsic Semiconductor:
In a pure semiconductor crystal, if current flows due to the breakage of crystal bonds, the semiconductor is called an intrinsic semiconductor.
- Breakage of Crystal Bonds:
In an intrinsic semiconductor, the current flows when covalent bonds are broken due to thermal energy, creating free charge carriers (electrons and holes).
- Electron-hole Pair Generation:
When a covalent bond breaks, an electron is released, leaving behind a hole. These electron-hole pairs are responsible for conduction.
- Energy Band Structure:
In an intrinsic semiconductor, the valence band is filled with electrons, and the conduction band is empty at absolute zero temperature.
- Temperature Effect:
As the temperature increases, more covalent bonds break, generating more electron-hole pairs and increasing the conductivity of the intrinsic semiconductor.
- Examples:
Silicon and germanium are examples of intrinsic semiconductors commonly used in electronic devices.
- Controlled Properties:
The conductivity of intrinsic semiconductors can be controlled by doping with specific impurities to create extrinsic semiconductors.
- Conclusion:
In summary, an intrinsic semiconductor is a pure semiconductor crystal where current flows due to the breakage of crystal bonds, leading to the generation of electron-hole pairs for conduction.
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In a pure semiconductor crystal, if current flows due to breakage of crystal bonds, then what is the semiconductor is called?a)Acceptorb)Donorc)Intrinsic semiconductord)Extrinsic semiconductorCorrect answer is option 'C'. Can you explain this answer?
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