Why holes are majority carrier in …
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Posted by Yash Sharma 7 years ago
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Shweta Gulati 7 years ago
When intrinsic semiconductors like Si and Ge are doped with group-13 elements like B,Al or Ga which contains only three valence electrons, then the place where the fourth valence electron is missing is called electron hole.An electron from a neighbouring atom can come and fill the electron hole,but in doing so it would leave an electron hole at its majority position.
Since, the number of holes are more than the number of electrons,therefore they are called as p-tyoe semiconductors and holes are the majority carriers.
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