Nonradiative Recombination of Excitons in Carbon Nanotubes Mediated by Free Charge Carriers

Abstract

Free electrons or holes can mediate the nonradiative recombination of excitons in carbon nanotubes. Kinematic constraints arising from the quasi one-dimensional nature of excitons and charge carriers lead to a thermal activation barrier for the process. However, a model calculation suggests that the rate for recombination mediated by a free electron is the same order of magnitude as that of two-exciton recombination. Small amounts of doping may contribute to the short exciton lifetimes and low quantum yields observed in carbon nanotubes.

18 pages, 4 figures. Submitted to Physical Review B

References in corpus (3)

• Radiative Lifetime of Excitons in Carbon Nanotubes
• Phonon and Electronic Non-radiative Decay of Excitons in Carbon Nanotubes
• Selection Rules for One- and Two-Photon Absorption by Excitons in Carbon Nanotubes

Cited by in corpus (7)

• Charge transport in semiconducting carbon nanotube networks
• Charge Transport in and Electroluminescence from sp${}^3$-Functionalized Carbon Nanotube Networks
• Gate-induced blueshift and quenching of photoluminescence in suspended single-walled carbon nanotubes
• Gate-controlled generation of optical pulse trains using individual carbon nanotubes
• Probing Mobile Charge Carriers in Semiconducting Carbon Nanotube Networks by Charge Modulation Spectroscopy
• Uniform Peak Optical Conductivity in Single-Walled Carbon Nanotubes
• Diffusive and Unimolecular Nonradiative Decay of Excited States in Doped Carbon Nanotubes