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.
%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}}
}