<> "The repository administrator has not yet configured an RDF license."^^ . <> . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes"^^ . "Single-walled carbon nanotubes (SWCNTs) are a promising material for strongly coupled \r\noptoelectronic devices, due to their outstanding electrical properties in combination with their \r\nnarrowband excitonic absorption and emission in the near-infrared. The rich SWCNT \r\nphotophysics allow to study the interaction of exciton-polaritons with a range of other quasi-particles, such as phonons and biexcitons, as well as with synthetic, luminescent sp3\r\ndefects at\r\nroom temperature. However, the ultimate goal of polariton condensation has not been achived \r\nwith SWCNT exciton-polaritons so far, and hence understanding their specific polariton \r\npopulation mechanism with respect to their unique photophysical properties is crucial. Here, time-dependent fluorescence and transmission measurements are used to track the exciton-polariton \r\npopulation in strongly coupled metalclad microcavities, identify the dominant relaxation \r\npathways and transitions, use luminescent sp3\r\ndefects to increase the polariton population by \r\nradiative pumping, and manipulate the SWCNT absorption edge by strong coupling in hybrid \r\norganic photodiodes.\r\nBy investigating the fluorescence decay of SWCNT exciton-polaritons, it is shown, that the \r\ndominant population mechanism in this system is radiative pumping. To overcome the thusly \r\nimposed limitation of the polariton population by the low SWCNT photoluminescence quantum \r\nyield, the SWCNTs are functionalized with luminescent sp3 defects, leading to a population \r\nincrease up to 10-fold for highly emissive detunings (photon fractions > 90%). By changing the \r\nsubstituents and the binding pattern, tuning of the defect emission could be further employed to \r\naccess application-relevant near-infrared wavelengths and improve the conditions for polariton \r\ncondensation.\r\nFurthermore, the SWCNT exciton-polariton dynamics are studied in the ultrafast regime by \r\ntransient transmission spectroscopy. The results reveal a polariton-mediated biexciton transition, \r\nthat is threefold more efficient than in weakly coupled SWCNTs. The polariton to biexciton \r\ntransition under off-resonant polariton excitation also indicates fast population transfer from dark \r\nto bright polaritons beyond the exciton and photon dephasing times. The efficient biexciton \r\ntransition of strongly coupled SWCNTs may enable to study correlated many-body states at room \r\ntemperature, that are predicted for excitonic molecules in strongly coupled high quality cavities. \r\nLastly, strongly coupled SWCNT hybrid organic photodiodes are presented, demonstrating how \r\nexciton-polaritons enable light-detection far beyond the intrinsic SWCNT absorption edge. For \r\nequal external quantum efficiency, photocarrier generation was observed 200 nm further into the \r\nnear-infrared as compared to previously reported strongly coupled photodiodes. Thus, \r\nrepresenting the first step towards efficient and tuneable polariton-mediated photocurrent \r\ngeneration by SWCNT hybrid organic photodiodes at application-relevant wavelengths."^^ . "2022" . . . . . . . "Jan Matthias"^^ . "Lüttgens"^^ . "Jan Matthias Lüttgens"^^ . . . . . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes (PDF)"^^ . . . "Dissertation_Jan_Lüttgens_PDFA.pdf"^^ . . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes (Other)"^^ . . . . . . "indexcodes.txt"^^ . . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes (Other)"^^ . . . . . . "small.jpg"^^ . . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes (Other)"^^ . . . . . . "lightbox.jpg"^^ . . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes (Other)"^^ . . . . . . "preview.jpg"^^ . . . "Strong Light-Matter Coupling with Single-Walled Carbon Nanotubes (Other)"^^ . . . . . . "medium.jpg"^^ . . "HTML Summary of #31075 \n\nStrong Light-Matter Coupling with Single-Walled Carbon Nanotubes\n\n" . "text/html" . . . "540 Chemie"@de . "540 Chemistry and allied sciences"@en . .