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When Arsenic atoms are added to Germanium lattice it becomes a/an-
  • a)
    Extrinsic semiconductor
  • b)
    Insulator
  • c)
    Superconductor
  • d)
    Intrinsic semiconductor
Correct answer is option 'A'. Can you explain this answer?
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When Arsenic atoms are added to Germanium lattice it becomes a/an-a)E...
When a pentavalent (donor) impurity, like arsenic, is added to germanium, it will form covalent bonds with the germanium atoms, leaving 1 electron relatively free in the crystal structure. Pure germanium may be converted into an N-type semiconductor by “doping” it with any donor impurity having 5 valence electrons in its outer shell. Semiconductors which are doped in this manner - either with N- or P-type impurities - are referred to as EXTRINSIC semiconductors.
Hence the option A is correct.
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When Arsenic atoms are added to Germanium lattice it becomes a/an-a)E...


Extrinsic Semiconductor

Extrinsic semiconductors are created by adding impurity atoms into the crystal lattice of a pure semiconductor material. In this case, when Arsenic atoms are added to the Germanium lattice, it becomes an extrinsic semiconductor.

Impurity Doping

The process of adding impurity atoms, such as Arsenic in this case, to the semiconductor lattice is known as impurity doping. The impurity atoms introduce additional charge carriers into the material, thereby altering its electrical conductivity.

N-type Semiconductor

When Arsenic atoms are added to Germanium, they introduce extra electrons into the crystal lattice, turning it into an N-type semiconductor. The presence of these extra electrons increases the conductivity of the material compared to pure Germanium.

Conductivity Enhancement

The addition of Arsenic atoms increases the number of charge carriers in the Germanium lattice, allowing for better conductivity. This makes the material suitable for use in electronic devices such as transistors and diodes.

Conclusion

In conclusion, when Arsenic atoms are added to the Germanium lattice, it transforms the material into an extrinsic semiconductor, specifically an N-type semiconductor, by increasing the number of charge carriers in the crystal lattice. This process enhances the material's conductivity and makes it useful for various electronic applications.
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When Arsenic atoms are added to Germanium lattice it becomes a/an-a)Extrinsic semiconductorb)Insulatorc)Superconductord)Intrinsic semiconductorCorrect answer is option 'A'. Can you explain this answer?
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