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To a germanium sample, traces of gallium are added as an impurity. The resultant sample would behave like
- a)a conductor
- b)a p-type semiconductor
- c)an n-type semiconductor
- d)an insulator
Correct answer is option 'B'. Can you explain this answer?
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To a germanium sample, traces of gallium are added as an impurity. The...
Explanation:
Introduction:
When traces of gallium are added as an impurity to a germanium sample, it results in a p-type semiconductor material.
P-type Semiconductor:
- In a p-type semiconductor, the doping material that is added introduces positively charged "holes" in the crystal lattice.
- Gallium, being a group III element, has one less valence electron compared to germanium. When gallium is added as an impurity to germanium, it creates "holes" in the crystal structure.
- These holes can accept electrons from neighboring atoms, leading to an excess of positive charge carriers (or "holes") in the material.
- The presence of these positive charge carriers makes the material behave like a p-type semiconductor.
Conductivity:
- In a p-type semiconductor, the majority charge carriers are positive holes, which can conduct electricity.
- Due to the presence of these positive charge carriers, the material would behave like a conductor compared to pure germanium.
Therefore, when traces of gallium are added as an impurity to a germanium sample, the resultant material behaves like a p-type semiconductor, allowing it to conduct electricity effectively.
Introduction:
When traces of gallium are added as an impurity to a germanium sample, it results in a p-type semiconductor material.
P-type Semiconductor:
- In a p-type semiconductor, the doping material that is added introduces positively charged "holes" in the crystal lattice.
- Gallium, being a group III element, has one less valence electron compared to germanium. When gallium is added as an impurity to germanium, it creates "holes" in the crystal structure.
- These holes can accept electrons from neighboring atoms, leading to an excess of positive charge carriers (or "holes") in the material.
- The presence of these positive charge carriers makes the material behave like a p-type semiconductor.
Conductivity:
- In a p-type semiconductor, the majority charge carriers are positive holes, which can conduct electricity.
- Due to the presence of these positive charge carriers, the material would behave like a conductor compared to pure germanium.
Therefore, when traces of gallium are added as an impurity to a germanium sample, the resultant material behaves like a p-type semiconductor, allowing it to conduct electricity effectively.
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To a germanium sample, traces of gallium are added as an impurity. The resultant sample would behave likea) a conductor b) a p-type semiconductor c) an n-type semiconductor d) an insulator Correct answer is option 'B'. Can you explain this answer?
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