We have studied intersubband decay of E-22 excitons in semiconducting
carbon nanotubes experimentally and theoretically. Photoluminescence
excitation line widths of semiconducting nanotubes with chiral indicess
(n,m) can be mapped onto a connectivity grid with curves of constant (n
- m) and (2n + m). Moreover, the global behavior of E-22 line widths is
best characterized by a strong increase with energy irrespective of
their (n-m)mod(3) = +/- 1 family affiliation. Solution of the
Bethe-Salpeter equations shows that the E-22 line widths are dominated
by phonon assisted coupling to higher momentum states of the E-11 and
E-12 exciton bands. The calculations also suggest that the branching
ratio for decay into exciton bands vs free carrier bands, respectively
is about 10:1.
%0 Journal Article
%1 hertel2008intersubband
%A Hertel, Tobias
%A Perebeinos, Vasili
%A Crochet, Jared
%A Arnold, Katharina
%A Kappes, Manfred
%A Avouris, Phaedon
%D 2008
%J NANO LETTERS
%K imported myown
%N 1
%P 87-91
%R 10.1021/nl0720915
%T Intersubband decay of 1-D exciton resonances in carbon nanotubes
%V 8
%X We have studied intersubband decay of E-22 excitons in semiconducting
carbon nanotubes experimentally and theoretically. Photoluminescence
excitation line widths of semiconducting nanotubes with chiral indicess
(n,m) can be mapped onto a connectivity grid with curves of constant (n
- m) and (2n + m). Moreover, the global behavior of E-22 line widths is
best characterized by a strong increase with energy irrespective of
their (n-m)mod(3) = +/- 1 family affiliation. Solution of the
Bethe-Salpeter equations shows that the E-22 line widths are dominated
by phonon assisted coupling to higher momentum states of the E-11 and
E-12 exciton bands. The calculations also suggest that the branching
ratio for decay into exciton bands vs free carrier bands, respectively
is about 10:1.
@article{hertel2008intersubband,
abstract = {{We have studied intersubband decay of E-22 excitons in semiconducting
carbon nanotubes experimentally and theoretically. Photoluminescence
excitation line widths of semiconducting nanotubes with chiral indicess
(n,m) can be mapped onto a connectivity grid with curves of constant (n
- m) and (2n + m). Moreover, the global behavior of E-22 line widths is
best characterized by a strong increase with energy irrespective of
their (n-m)mod(3) = +/- 1 family affiliation. Solution of the
Bethe-Salpeter equations shows that the E-22 line widths are dominated
by phonon assisted coupling to higher momentum states of the E-11 and
E-12 exciton bands. The calculations also suggest that the branching
ratio for decay into exciton bands vs free carrier bands, respectively
is about 10:1.}},
added-at = {2021-01-26T13:59:01.000+0100},
author = {Hertel, Tobias and Perebeinos, Vasili and Crochet, Jared and Arnold, Katharina and Kappes, Manfred and Avouris, Phaedon},
biburl = {https://www.bibsonomy.org/bibtex/207e7f76061c7120a363d53ab2a1203de/hertel-group},
doi = {{10.1021/nl0720915}},
eissn = {{1530-6992}},
interhash = {ecf46f24bdd095620c4e6d872e51c657},
intrahash = {07e7f76061c7120a363d53ab2a1203de},
issn = {{1530-6984}},
journal = {{NANO LETTERS}},
keywords = {imported myown},
month = {{JAN}},
number = {{1}},
orcid-numbers = {{Kappes, Manfred/0000-0002-1199-1730
Crochet, Jared/0000-0002-9570-2173}},
pages = {{87-91}},
researcherid-numbers = {{Hertel, Tobias/J-4243-2012
Kappes, Manfred/G-7142-2017
Hertel, Tobias/D-5805-2013
Crochet, Jared/C-8488-2011
}},
timestamp = {2021-01-26T13:59:08.000+0100},
title = {{Intersubband decay of 1-D exciton resonances in carbon nanotubes}},
unique-id = {{ISI:000252257700015}},
volume = {{8}},
year = {{2008}}
}