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arXiv · 1411.0531

Microscopic view on the ultrafast photoluminescence from photo-excited graphene

Torben Winzer·Richard Ciesielski·Matthias Handloser·Alberto Comin·Achim Hartschuh·Ermin Malic
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Abstract

We present a joint theory-experiment study on ultrafast photoluminescence from photoexcited graphene. Based on a microscopic theory, we reveal two distinct mechanisms behind the occurring photoluminescence: Besides the well-known incoherent contribution driven by non-equilibrium carrier occupations, we found a coherent part that spectrally shifts with the excitation energy. In our experiments, we demonstrate for the first time the predicted appearance and spectral shift of the coherent photoluminescence.

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Torben Winzer, Richard Ciesielski, Matthias Handloser, Alberto Comin, Achim Hartschuh, Ermin Malic. 2014-11-03. Microscopic view on the ultrafast photoluminescence from photo-excited graphene. https://doi.org/10.1021/nl504176z

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