Gate-voltage induced trions in suspended carbon nanotubes

Abstract

We observe trion emission from suspended carbon nanotubes where carriers are introduced electrostatically using field-effect transistor structures. The trion peak emerges below the $E_{11}$ emission energy at gate voltages that coincide with the onset of bright exciton quenching. By investigating nanotubes with various chiralities, we verify that the energy separation between the bright exciton peak and the trion peak becomes smaller for larger diameter tubes. Trion binding energies that are significantly larger compared to surfactant-wrapped carbon nanotubes are obtained, and the difference is attributed to the reduced dielectric screening in suspended tubes.

5 pages, 3 figures

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Cited by in corpus (11)

• Cold exciton electroluminescence from air-suspended carbon nanotube split-gate devices
• Formation of Organic Color Centers in Air-Suspended Carbon Nanotubes Using Vapor-Phase Reaction
• Impact of Dielectric Environment on Trion Emission from Single-Walled Carbon Nanotube Networks
• Organic molecular tuning of many-body interaction energies in air-suspended carbon nanotubes
• Dipolar and charged localized excitons in carbon nanotubes
• Trion-based High-speed Electroluminescence from Semiconducting Carbon Nanotube Films
• Molecular screening effects on exciton-carrier interactions in suspend carbon nanotubes
• Tuning Electroluminescence from Functionalized SWCNT Networks further into the Near-Infrared
• Intrinsic process for upconversion photoluminescence via $K$-momentum phonon coupling in carbon nanotubes
• Trion emission from frozen p-n junctions in networks of electrolyte-gated (6,5) single-walled carbon nanotubes
• Trion transfer in mixed-dimensional heterostructures