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What is produced by the doping of silicon with arsenic?
- a)n type semiconductor
- b)insulator
- c)conductor
- d)p type semiconductor
Correct answer is option 'A'. Can you explain this answer?
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What is produced by the doping of silicon with arsenic?a)n type semico...
Semiconductor:
- A semiconductor is a substance that has a resistivity in between conductor and insulator.
- A semiconductor has 4 valance electrons that are C, Si, Ge, Sn, and Pb.
Classification of Semiconductor:
Intrinsic Semiconductor:
Intrinsic Semiconductor:
- An extremely pure form is known as an Intrinsic Semiconductor.
- In intrinsic Semiconductor, even at room temperature, hole electrons pair are created.
- Electric fields applied across the intrinsic semiconductor cause current conduction due to both Holes as well as Electrons.
Extrinsic Semiconductor:
- The process of adding impurity to the pure semiconductor is called Doping.
- By means of doping Extrinsic semiconductor is formed.
- Normally, 108 atoms of semiconductor added with 1 atom of impurity.
- Depending upon the types of impurity added, the extrinsic semiconductor is classified into N-type and P-Type semiconductors.
1. N-Type Semiconductor: This type of semiconductor is formed by added pentavalent impurity.
The current conduction in N-Type semiconductor is predominantly by free electron or it has electron type conductivity.
2. P-Type Semiconductor: This type of semiconductor is formed by added Trivalent impurity.
The current conduction in the P-Type semiconductor is predominantly by holes or it has hole type conductivity.
Conclusion: Hence, Pentavalent impurity (Arsenic-As) in Intrinsic semiconductors (Silicon) is used to create an N-type semiconductor.
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What is produced by the doping of silicon with arsenic?a)n type semiconductorb)insulatorc)conductord)p type semiconductorCorrect answer is option 'A'. Can you explain this answer?
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