What Causes the Forbidden Gap in Semiconductors?

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Discussion Overview

The discussion centers on the origin of the forbidden gap in semiconductors, exploring the underlying physics and theoretical explanations. Participants also express interest in related concepts such as Bloch functions, Brillouin zones, and the determination rules in quantum dots.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant seeks an explanation for the origin of the forbidden gap, questioning the physics behind its creation.
  • Another participant references Wikipedia articles on band gaps but finds them lacking in a detailed explanation of the phenomenon.
  • A different participant expresses interest in Bloch functions and Brillouin zones, asking for their significance and meaning.
  • One participant asserts that the band gap exists because there are no solutions to the Schrödinger equation for that range of energies, presenting a perspective on the phenomenon.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus on the explanation of the forbidden gap, with multiple viewpoints and questions remaining unresolved.

Contextual Notes

Some claims depend on specific interpretations of quantum mechanics and may involve unresolved mathematical steps related to the Schrödinger equation.

Arthur202
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Can anybody explain my what is the origin of this forbidden gap?

I mean how it was created and what is the physics behind this issue?
 
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I am also looking for a good explanations for bloch functions and beriluen zone..why we have it and what is the meaning...

And the last issue I am interested in what are the determination rules in quantum dots ( I mean spectroscopic rules)?
 
Arthur202 said:
There isn't a real explanation there for the phenomenon as I have asked. i didn't ask what is it.

The band gap exists because there are no solutions to the Schrödinger equation for that range of energies.
 

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