Question
The concepts of holes is introduced based on:
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Answer
- The notion that it is a whole lot easier to keep track of the missing particles in an "almost-full" band.
The concept of holes was introduced so as to occupy the empty spaces left by the missing electron. For example, in a valence band, when an electron jumps from valence to conduction band, an empty space is created in valence band which is occupied by a hole.
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