Trion-Polariton Formation in Single-Walled Carbon Nanotube Microcavities.

Autor:	Möhl C; Institute for Physical Chemistry, Universität Heidelberg, D-69120 Heidelberg, Germany., Graf A; Institute for Physical Chemistry, Universität Heidelberg, D-69120 Heidelberg, Germany., Berger FJ; Institute for Physical Chemistry, Universität Heidelberg, D-69120 Heidelberg, Germany., Lüttgens J; Institute for Physical Chemistry, Universität Heidelberg, D-69120 Heidelberg, Germany., Zakharko Y; Institute for Physical Chemistry, Universität Heidelberg, D-69120 Heidelberg, Germany., Lumsargis V; Department of Chemistry, Penn State University, University Park, Pennsylvania 16802, United States., Gather MC; Organic Semiconductor Centre, SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, United Kingdom., Zaumseil J; Institute for Physical Chemistry, Universität Heidelberg, D-69120 Heidelberg, Germany.; Centre for Advanced Materials, Universität Heidelberg, D-69120 Heidelberg, Germany.
Jazyk:	angličtina
Zdroj:	ACS photonics [ACS Photonics] 2018 Jun 20; Vol. 5 (6), pp. 2074-2080. Date of Electronic Publication: 2018 May 08.
DOI:	10.1021/acsphotonics.7b01549
Abstrakt:	We demonstrate the formation and tuning of charged trion-polaritons in polymer-sorted (6,5) single-walled carbon nanotubes in a planar metal-clad microcavity at room temperature. The positively charged trion-polaritons were induced by electrochemical doping and characterized by angle-resolved reflectance and photoluminescence spectroscopy. The doping level of the nanotubes within the microcavity was controlled by the applied bias and thus enabled tuning from mainly excitonic to a mixture of exciton and trion transitions. Mode splitting of more than 70 meV around the trion energy and emission from the new lower polariton branch corroborate a transition from exciton-polaritons (neutral) to trion-polaritons (charged). The estimated charge-to-mass ratio of these trion-polaritons is 200 times higher than that of electrons or holes in carbon nanotubes, which has exciting implications for the realization of polaritonic charge transport. Competing Interests: The authors declare no competing financial interest.
Databáze:	MEDLINE
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