Author/Authors :
Takeshi Koyama، نويسنده , , Koji Asaka، نويسنده , , Naoki Hikosaka، نويسنده , , Hideo Kishida، نويسنده , , Yahachi Saito، نويسنده , , Arao Nakamura، نويسنده ,
Abstract :
We investigated luminescence decay kinetics in single-walled carbon nanotubes in large bundles excited by femtosecond pulses. The time constant of luminescence decay becomes longer with decrease in photon energy: 40 fs at 1.2 eV and 380 fs at 0.6 eV. This behavior is explained by exciton energy transfer from an excited to neighboring tubes.
Keywords :
Exciton energy transfer , Femtosecond luminescence spectroscopy , Up-conversion technique , Single-walled carbon nanotube
