%0 Journal Article %1 doi:10.1021/acs.jpclett.6b00797 %A Mann, Christoph %A Hertel, Tobias %D 2016 %J The Journal of Physical Chemistry Letters %K absorption excitons myown %N 12 %P 2276-2280 %R 10.1021/acs.jpclett.6b00797 %T 13 nm Exciton Size in (6,5) Single-Wall Carbon Nanotubes %U https://doi.org/10.1021/acs.jpclett.6b00797 %V 7 %X Electron–hole correlation lengths, also termed exciton size, for (6,5) single-wall carbon nanotubes (SWNTs) are determined using femtosecond time-resolved pump–probe spectroscopy. The phase space filling model is used to obtain the sizes of the first subband exciton in samples of isolated and of bundled SWNTs. The experiments indicate that the exciton size of (13 ± 3) nm is a factor of 6 higher than previous experimental estimates and theoretical predictions for vacuum suspended SWNTs. This surprising result may be attributed at least in part to the effect of the dielectric environment on exciton sizes and supports recent theoretical findings predicting that screening in SWNTs may enhance rather than reduce electron–hole interactions for separations larger than the tube diameter. Thereby, the work also points to the unique nature of screening and electronic correlations in one-dimensional semiconductors.

@article{doi:10.1021/acs.jpclett.6b00797, abstract = { Electron–hole correlation lengths, also termed exciton size, for (6,5) single-wall carbon nanotubes (SWNTs) are determined using femtosecond time-resolved pump–probe spectroscopy. The phase space filling model is used to obtain the sizes of the first subband exciton in samples of isolated and of bundled SWNTs. The experiments indicate that the exciton size of (13 ± 3) nm is a factor of 6 higher than previous experimental estimates and theoretical predictions for vacuum suspended SWNTs. This surprising result may be attributed at least in part to the effect of the dielectric environment on exciton sizes and supports recent theoretical findings predicting that screening in SWNTs may enhance rather than reduce electron–hole interactions for separations larger than the tube diameter. Thereby, the work also points to the unique nature of screening and electronic correlations in one-dimensional semiconductors. }, added-at = {2021-01-12T16:28:29.000+0100}, author = {Mann, Christoph and Hertel, Tobias}, biburl = {https://www.bibsonomy.org/bibtex/23e9a9338046157960cee60180e116b8c/hertel-group}, description = {13 nm Exciton Size in (6,5) Single-Wall Carbon Nanotubes | The Journal of Physical Chemistry Letters}, doi = {10.1021/acs.jpclett.6b00797}, eprint = {https://doi.org/10.1021/acs.jpclett.6b00797}, interhash = {fd8bf9c6b14623a52fdedbc5997de79e}, intrahash = {3e9a9338046157960cee60180e116b8c}, journal = {The Journal of Physical Chemistry Letters}, keywords = {absorption excitons myown}, note = {PMID: 27249311}, number = 12, pages = {2276-2280}, timestamp = {2021-01-27T09:15:00.000+0100}, title = {13 nm Exciton Size in (6,5) Single-Wall Carbon Nanotubes}, url = {https://doi.org/10.1021/acs.jpclett.6b00797}, volume = 7, year = 2016 }