%0 Journal Article %1 doi:10.1021/acs.jpcc.5b06865 %A Schilling, Daniel %A Mann, Christoph %A Kunkel, Pascal %A Schöppler, Friedrich %A Hertel, Tobias %D 2015 %J The Journal of Physical Chemistry C %K excitons myown %N 42 %P 24116-24123 %R 10.1021/acs.jpcc.5b06865 %T Ultrafast Spectral Exciton Diffusion in Single-Wall Carbon Nanotubes Studied by Time-Resolved Hole Burning %U https://doi.org/10.1021/acs.jpcc.5b06865 %V 119 %X We have studied ultrafast spectral diffusion (SD) within exciton bands of semiconducting single-wall carbon nanotubes (s-SWNTs) using one- and two-dimensional, near-infrared transient hole burning spectroscopy and time-resolved fluorescence spectroscopy at temperatures between 15 and 293 K. We find that inhomogeneous spectral broadening of 60 meV for s-SWNTs embedded in gelatin exceeds the homogeneous line width of 3.3 meV by over an order of magnitude. The experiments show that ultrafast spectral diffusion of excitons in gel-immobilized s-SWNTs on the 250 fs time scale can be attributed to axial intratube exciton diffusion. Comparison with kinetic Monte Carlo simulations suggests that the length-scale characteristic of the granularity of the axial potential energy landscape is about 24 nm.

@article{doi:10.1021/acs.jpcc.5b06865, abstract = { We have studied ultrafast spectral diffusion (SD) within exciton bands of semiconducting single-wall carbon nanotubes (s-SWNTs) using one- and two-dimensional, near-infrared transient hole burning spectroscopy and time-resolved fluorescence spectroscopy at temperatures between 15 and 293 K. We find that inhomogeneous spectral broadening of 60 meV for s-SWNTs embedded in gelatin exceeds the homogeneous line width of 3.3 meV by over an order of magnitude. The experiments show that ultrafast spectral diffusion of excitons in gel-immobilized s-SWNTs on the 250 fs time scale can be attributed to axial intratube exciton diffusion. Comparison with kinetic Monte Carlo simulations suggests that the length-scale characteristic of the granularity of the axial potential energy landscape is about 24 nm. }, added-at = {2021-01-12T17:52:07.000+0100}, author = {Schilling, Daniel and Mann, Christoph and Kunkel, Pascal and Schöppler, Friedrich and Hertel, Tobias}, biburl = {https://www.bibsonomy.org/bibtex/23281812ffe832cfeff4b47373437cdc2/hertel-group}, description = {Ultrafast Spectral Exciton Diffusion in Single-Wall Carbon Nanotubes Studied by Time-Resolved Hole Burning | The Journal of Physical Chemistry C}, doi = {10.1021/acs.jpcc.5b06865}, eprint = {https://doi.org/10.1021/acs.jpcc.5b06865}, interhash = {768f692e7b53ace0de48da87fd0937d4}, intrahash = {3281812ffe832cfeff4b47373437cdc2}, journal = {The Journal of Physical Chemistry C}, keywords = {excitons myown}, number = 42, pages = {24116-24123}, timestamp = {2021-01-27T09:13:50.000+0100}, title = {Ultrafast Spectral Exciton Diffusion in Single-Wall Carbon Nanotubes Studied by Time-Resolved Hole Burning}, url = {https://doi.org/10.1021/acs.jpcc.5b06865}, volume = 119, year = 2015 }