Exciton dephasing and multiexciton recombinations in a single carbon nanotube

• 金光, 義彦

• Inoue, Tadashi

• Murakami, Yoichi

• Maruyama, Shigeo

• Kanemitsu, Yoshihiko

抄録

We studied the temperature and excitation intensity dependence of exciton luminescence in individual single-walled carbon nanotubes (SWNTs) using single nanotube photoluminescence (PL) spectroscopy. The linear temperature dependence of the PL linewidth in a single SWNT implies that the exciton dephasing is dominated by the interaction between the exciton and the phonon mode with very low energy under lower-excitation conditions. Saturation of the PL intensity and broadening of the PL linewidth in a single SWNT occur simultaneously with an increase in excitation laser intensity. Our findings show that the rapid exciton-exciton annihilation through multiparticle Auger recombination broadens the homogeneous PL linewidth.

収録刊行物

• Physical Review B

  Physical Review B 77 (3), 2008-01

  American Physical Society

キーワード

• Auger effect
• carbon nanotubes
• electron-hole recombination
• phonon-exciton interactions
• photoluminescence
• spectral line breadth
• spectral line broadening
• spectral line intensity

詳細情報

• CRID: 1050001202063198464
• NII論文ID: 120001682385
• ISSN: 10980121
• HANDLE: 2433/87354
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles