Exciton diffusion in air-suspended single-walled carbon nanotubes

Abstract

Direct measurements of the diffusion length of excitons in air-suspended single-walled carbon nanotubes are reported. Photoluminescence microscopy is used to identify individual nanotubes and to determine their lengths and chiral indices. Exciton diffusion length is obtained by comparing the dependence of photoluminescence intensity on the nanotube length to numerical solutions of diffusion equations. We find that the diffusion length in these clean, as-grown nanotubes is significantly longer than those reported for micelle-encapsulated nanotubes.

4 pages, 4 figures

References in corpus (8)

• Band Structure, Phonon Scattering and the Ultimate Performance of Single-Walled Carbon Nanotube Transistors
• Stepwise Quenching of Exciton Fluorescence in Carbon Nanotubes by Single Molecule Reactions
• Photon Antibunching in the Photoluminescence Spectra of a Single Carbon Nanotube
• Electron Transport in Very Clean, As-Grown Suspended Carbon Nanotubes
• Electrically driven thermal light emission from individual single-walled carbon nanotubes
• Photoluminescence from single walled carbon nanotubes: a comparison between suspended and micelle-encapsulated nanotubes
• Photoluminescence clamping with few excitons in a single-walled carbon nanotube
• Existence of an upper limit on the density of excitons in carbon nanotubes by diffusion-limited exciton-exciton annihilation: Experiment and theory

Cited by in corpus (30)

• Exciton diffusion and halo effects in monolayer semiconductors
• Ultralow mode-volume photonic crystal nanobeam cavities for high efficiency coupling to individual carbon nanotube emitters
• Charge transport in semiconducting carbon nanotube networks
• Exciton diffusion, end quenching, and exciton-exciton annihilation in individual air-suspended carbon nanotubes
• Enhancement of carbon nanotube photoluminescence by photonic crystal nanocavities
• Spontaneous exciton dissociation in carbon nanotubes
• Gate-induced blueshift and quenching of photoluminescence in suspended single-walled carbon nanotubes
• Room-temperature single photon emission from micron-long air-suspended carbon nanotubes
• Influences of Exciton Diffusion and Exciton-Exciton Annihilation on Photon Emission Statistics of Carbon Nanotubes
• Optical control of individual carbon nanotube light emitters by spectral double resonance in silicon microdisk resonators
• Gate-voltage induced trions in suspended carbon nanotubes
• Giant circular dichroism in individual carbon nanotubes induced by extrinsic chirality
• Single carbon nanotubes as ultrasmall all-optical memories
• Exciton diffusion in semiconducting single-wall carbon nanotubes studied by transient absorption microscopy
• High efficiency dark-to-bright exciton conversion in carbon nanotubes
• Stark effect of excitons in individual air-suspended carbon nanotubes
• Polarized light emission from individual incandescent carbon nanotubes
• Cold exciton electroluminescence from air-suspended carbon nanotube split-gate devices
• Gate-controlled generation of optical pulse trains using individual carbon nanotubes
• Experimental determination of the local optical conductivity of a semiconducting carbon nanotube and its modification at individual defects
• Formation of Organic Color Centers in Air-Suspended Carbon Nanotubes Using Vapor-Phase Reaction
• Super-Resolution Fluorescence Imaging of Carbon Nanotubes Using a Nonlinear Excitonic Process
• First-passage theory of exciton population loss in single-walled carbon nanotubes reveals micron-scale intrinsic diffusion lengths
• Quantum emission assisted by energy landscape modification in pentacene-decorated carbon nanotubes
• Near-Intrinsic Photo- and Electroluminescence from Single-Walled Carbon Nanotube Thin Films on BCB-Passivated Surfaces
• Deterministic Formation of Single Organic Color Centers in Single-Walled Carbon Nanotubes
• Excitonic effects on coherent phonon dynamics in single wall carbon nanotubes
• Intrinsic process for upconversion photoluminescence via $K$-momentum phonon coupling in carbon nanotubes
• Localized guided-mode and cavity-mode double resonance in photonic crystal nanocavities
• Independence of Optical Absorption on Auger Ionization in Single-Walled Carbon Nanotubes Revealed by Ultrafast e-h Photodoping