%0 Journal Article %1 sciascia2010lived %A Sciascia, C. %A Crochet, J. %A Hertel, T. %A Lanzani, G. %D 2010 %J EUROPEAN PHYSICAL JOURNAL B %K imported myown %N 2 %P 115-120 %R 10.1140/epjb/e2009-00374-1 %T Long lived photo excitations in (6,5) carbon nanotubes %V 75 %X We study the photo-induced transmission change (Delta T/T) upon quasi-continuum laser excitation, for different modulation frequency and excitation intensity in films of (6, 5) enriched CoMoCat single wall nanotubes (SWNTs) embedded in a polymeric matrix. This technique probes long-lived excited species, with lifetime in the 1 ms-1 s domain. The observed line-shape of Delta T/T spectra that can be assigned to a superposition of ground state bleaching and absorption modulation. We speculate that photo-excitation creates charges which get trapped in the sample, acquiring ms lifetime. This causes bleaching of the ground state absorption due to state filling and possibly a tube diameter expansion, with consequent blue shift of the optical transition.

@article{sciascia2010lived, abstract = {{We study the photo-induced transmission change (Delta T/T) upon quasi-continuum laser excitation, for different modulation frequency and excitation intensity in films of (6, 5) enriched CoMoCat single wall nanotubes (SWNTs) embedded in a polymeric matrix. This technique probes long-lived excited species, with lifetime in the 1 ms-1 s domain. The observed line-shape of Delta T/T spectra that can be assigned to a superposition of ground state bleaching and absorption modulation. We speculate that photo-excitation creates charges which get trapped in the sample, acquiring ms lifetime. This causes bleaching of the ground state absorption due to state filling and possibly a tube diameter expansion, with consequent blue shift of the optical transition.}}, added-at = {2021-01-26T13:59:32.000+0100}, author = {Sciascia, C. and Crochet, J. and Hertel, T. and Lanzani, G.}, biburl = {https://www.bibsonomy.org/bibtex/26b112204019c46258820aed424b86784/hertel-group}, doi = {{10.1140/epjb/e2009-00374-1}}, eissn = {{1434-6036}}, interhash = {233d19bb3d8ba87dfdacbfa607e01b7e}, intrahash = {6b112204019c46258820aed424b86784}, issn = {{1434-6028}}, journal = {{EUROPEAN PHYSICAL JOURNAL B}}, keywords = {imported myown}, month = {{MAY}}, number = {{2}}, pages = {{115-120}}, researcherid-numbers = {{Hertel, Tobias/J-4243-2012 Crochet, Jared/C-8488-2011 Hertel, Tobias/D-5805-2013}}, timestamp = {2021-01-26T13:59:47.000+0100}, title = {{Long lived photo excitations in (6,5) carbon nanotubes}}, unique-id = {{ISI:000278473300001}}, volume = {{75}}, year = {{2010}} }