What is Phonon Replica? A Brief Explanation

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Could You describe me what it is phonon replica.

regards
rafal
 
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hi
I also need the answer for this question.

From my reading, I think the phonon replica is an interaction between exciton and lattice vibrational. Due to phonon optical energy, it helps electron-hole to recombine and emit a light. This can be observed in PL exp at high T.

Can somebody explain further about this topic pls.

*sorry for my english.
 

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