Jump to main content
Jump to site search

Issue 2, 2017
Previous Article Next Article

Seeing the invisible plasma with transient phonons in cuprous oxide

Author affiliations

Abstract

The emission of phonons from electron–hole plasma is the primary limit on the efficiency of photovoltaic devices operating above the bandgap. In cuprous oxide (Cu2O) there is no luminescence from electron–hole plasma. Therefore, we searched for optical phonons emitted by energetic charge carriers using phonon-to-exciton upconversion transitions. We found 14 meV phonons with a lifetime of 0.916 ± 0.008 ps and 79 meV phonons that are longer lived and overrepresented. It is surprising that the higher energy phonon has a longer lifetime.

Graphical abstract: Seeing the invisible plasma with transient phonons in cuprous oxide

Back to tab navigation

Supplementary files

Article information


Submitted
23 Sep 2016
Accepted
29 Nov 2016
First published
12 Dec 2016

This article is Open Access

Phys. Chem. Chem. Phys., 2017,19, 1151-1157
Article type
Paper

Seeing the invisible plasma with transient phonons in cuprous oxide

L. Frazer, R. D. Schaller, K. B. Chang, A. Chernatynskiy and K. R. Poeppelmeier, Phys. Chem. Chem. Phys., 2017, 19, 1151
DOI: 10.1039/C6CP06532E

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. Material from this article can be used in other publications provided that the correct acknowledgement is given with the reproduced material.

Reproduced material should be attributed as follows:

  • For reproduction of material from NJC:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the Centre National de la Recherche Scientifique (CNRS) and the RSC.
  • For reproduction of material from PCCP:
    [Original citation] - Published by the PCCP Owner Societies.
  • For reproduction of material from PPS:
    [Original citation] - Published by The Royal Society of Chemistry (RSC) on behalf of the European Society for Photobiology, the European Photochemistry Association, and RSC.
  • For reproduction of material from all other RSC journals:
    [Original citation] - Published by The Royal Society of Chemistry.

Information about reproducing material from RSC articles with different licences is available on our Permission Requests page.


Social activity

Search articles by author

Spotlight

Advertisements