SRH and radiative recombination

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    Recombination
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Discussion Overview

The discussion revolves around the topic of Shockley-Read-Hall (SRH) recombination and its relationship with radiative recombination, specifically questioning whether SRH recombination can lead to the emission of photons instead of phonons. The scope includes theoretical aspects of semiconductor physics and the mechanisms of energy transfer during recombination processes.

Discussion Character

  • Exploratory
  • Conceptual clarification

Main Points Raised

  • One participant notes that trap-assisted SRH recombination is generally considered non-radiative and suggests it transfers energy to phonons.
  • The same participant questions the conditions under which SRH recombination might lead to photon emission instead of phonon emission.
  • Another participant expresses a similar inquiry, indicating a shared uncertainty regarding the topic.
  • A different participant recalls that GaP doped with nitrogen can emit green light, proposing this as a potential example of photon emission related to the discussion.

Areas of Agreement / Disagreement

Participants do not appear to reach a consensus, as multiple views and questions remain regarding the mechanisms of SRH recombination and its potential to emit photons.

Contextual Notes

The discussion highlights uncertainties about the conditions that dictate whether energy is emitted as photons or phonons, as well as the specific examples of materials that may exhibit different behaviors.

Pete99
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Hi,

I have read in different references that trap assisted SRH recombination is non radiative and gives the energy to phonons.

However, I have not been able to understand why is not possible to generate photons in this case. I mean, can SRH recombination give the energy to photons? What determines in this case if photons or phonons are emmited?

Thanks for any help.
 
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Any idea?
 
I have the same question!
 
I seem to remember that GaP doped with N can emit green light, is this an example giving the energy to photons?
 

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