Which among the following combinations of elements produces n-type semiconductor?
Answers
Answer:5th group elements
Explanation:
Doping means adding of impurity to the semi conductors like silicon or germanium.
n-type semi conductors are nothing but 5th group elements such as nitrogen,phosporous,arsenic,antimony,bismuth.
In n-type Semi conductors majority are electrons.
Answer:
An intrinsic semiconductor that had phosphorus (P), arsenic (As), or antimony (Sb) added as an impurity is known as an n-type semiconductor.
Explanation:
A little quantity of a Group-V element, such as phosphorous (P) or arsenic (As), is added to the intrinsic semiconductor to create an n-type semiconductor.
Each atom of a group V element contains five valence electrons.
Therefore, both electrons and holes are present in an n-type semiconductor. However, the number of electrons is several times more than the number of holes.
To produce an n-type semiconductor, pentavalent elements are combined with silicon or germanium semiconductor.
A unique procedure is used to combine pentavalent antimony or arsenic at a high temperature.
The quantity of impurity added is managed during mixing so as not to alter the fundamental makeup of silicon or germanium; instead, their atoms are absorbed into the crystal lattice.
Antimony and arsenic both have five valence electrons.
Its outermost 4 electrons share 4 electrons with the germanium or silicon next to it. So, four covalent bonds are created. One electron is left behind in each arsenic or antimony atom and is free to travel with the crystal.
Hence, the combination of elements that produce n-type semiconductors is (germanium and silicon) or (antimony and arsenic).
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