114 citations · 354 across the 6 of their papers we have counts for
9 papers
Gate-voltage induced trions in suspended carbon nanotubes
M. Yoshida, A. Popert, Y. K. Kato
We observe trion emission from suspended carbon nanotubes where carriers are introduced electrostatically using field-effect transistor structures. The trion peak emerges below the…
Exciton diffusion, end quenching, and exciton-exciton annihilation in individual air-suspended carbon nanotubes
A. Ishii, M. Yoshida, Y. K. Kato
Luminescence properties of carbon nanotubes are strongly affected by exciton diffusion, which plays an important role in various nonradiative decay processes. Here we perform photo…
Gate-controlled generation of optical pulse trains using individual carbon nanotubes
M. Jiang, Y. Kumamoto, A. Ishii +3
We report on optical pulse-train generation from individual air-suspended carbon nanotubes under an application of square-wave gate voltages. Electrostatically-induced carrier accu…
Stark effect of excitons in individual air-suspended carbon nanotubes
M. Yoshida, Y. Kumamoto, A. Ishii +2
We investigate electric-field induced redshifts of photoluminescence from individual single-walled carbon nanotubes. The shifts scale quadratically with field, while measurements w…
Giant circular dichroism in individual carbon nanotubes induced by extrinsic chirality
A. Yokoyama, M. Yoshida, A. Ishii +1
Circular dichroism is widely used for characterizing organic and biological materials, but measurements at a single molecule level are challenging because differences in absorption…
Spontaneous exciton dissociation in carbon nanotubes
Y. Kumamoto, M. Yoshida, A. Ishii +3
Simultaneous photoluminescence and photocurrent measurements on individual single-walled carbon nanotubes reveal spontaneous dissociation of excitons into free electron-hole pairs.…