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Title: Nonradiative exciton decay dynamics in hole-doped single-walled carbon nanotubes
Authors: Matsuda, Kazunari  kyouindb  KAKEN_id
Miyauchi, Yuhei  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0945-0265 (unconfirmed)
Sakashita, Takero
Kanemitsu, Yoshihiko  kyouindb  KAKEN_id  orcid https://orcid.org/0000-0002-0788-131X (unconfirmed)
Author's alias: 松田, 一成
宮内, 雄平
坂下, 健郎
金光, 義彦
Issue Date: Jan-2010
Publisher: American Physical Society
Journal title: Physical Review B
Volume: 81
Issue: 3
Thesis number: 033409
Abstract: We studied exciton dynamics in hole-doped single-walled carbon nanotubes (SWNTs). The intensities of photoluminescence (PL) peaks decreased and the PL lifetimes became shorter with an addition of hole dopant tetrafluorotetracyano-p-quinodimethane (F4TCNQ). We found that the nonradiative decay of excitons induced by the F4TCNQ was of the order of a few tens of picoseconds for densities of ~0.1 hole/nm at room temperature. Our results suggest that the nonradiative exciton relaxation in the hole-doped SWNTs can be explained by phonon-assisted indirect ionization processes.
Rights: © 2010 The American Physical Society
URI: http://hdl.handle.net/2433/93007
DOI(Published Version): 10.1103/PhysRevB.81.033409
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