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Title: Trion formation and recombination dynamics in hole-doped single-walled carbon nanotubes
Authors: Nishihara, Taishi
Yamada, Yasuhiro  KAKEN_id
Okano, Makoto  KAKEN_id
Kanemitsu, Yoshihiko  kyouindb  KAKEN_id
Author's alias: 金光, 義彦
Keywords: carbon nanotubes
high-speed optical techniques
time resolved spectra
trions
Issue Date: Jul-2013
Publisher: AIP Publishing LLC
Journal title: Applied Physics Letters
Volume: 103
Issue: 2
Thesis number: 023101
Abstract: We studied the trion (charged exciton) formation and recombination dynamics in hole-doped (7,5) single-walled carbon nanotubes (SWCNTs) by performing femtosecond transient absorption spectroscopy. The doping of SWCNTs with holes leads to a fast decay component from an exciton to a trion, and the trion decays with a lifetime of a few picoseconds. The experimental results can be explained by a quantized model accounting for the dark exciton and trion states and the hole number distribution in a SWCNT. Our findings show that the optical responses of SWCNTs can be manipulated by doping of SWCNTs with a small number of holes.
Rights: © 2013 AIP Publishing LLC
URI: http://hdl.handle.net/2433/176986
DOI(Published Version): 10.1063/1.4813014
Appears in Collections:Journal Articles

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