Quantized exciton-exciton recombination in undoped and hole-doped single-walled carbon nanotubes

Taishi Nishihara, Yasuhiro Yamada, Makoto Okano, Yoshihiko Kanemitsu

研究成果: Article査読

1 被引用数 (Scopus)

抄録

We studied the quantized exciton Auger recombination in undoped and hole-doped single-walled carbon nanotubes (SWCNTs) by means of transient absorption spectroscopy and theoretical calculations. In undoped SWCNTs, a fast decay component appears under strong photoexcitation owing to two-exciton Auger recombination. The exciton decay dynamics is well explained by the quantized exciton Auger recombination model that takes into consideration the dark-exciton state. In hole-doped SWCNTs, the fast decay component is drastically reduced even under strong photoexcitation. We calculated the temporal evolution of the exciton population in hole-doped samples by considering exciton-hole interactions and the hole-number distribution in SWCNTs, and found it to be in good agreement with the experimental results.

本文言語English
論文番号02BD10
ジャーナルJapanese journal of applied physics
53
2 PART 2
DOI
出版ステータスPublished - 2014 2 27
外部発表はい

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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