Mono- and Biexponential Luminescence Decays of Individual Single-Walled Carbon Nanotubes

Gokus, Tobias; Cognet, Laurent; Duque, Juan G.; Pasquali, Matteo; Hartschuh, Achim und Lounis, Brahim (2010): Mono- and Biexponential Luminescence Decays of Individual Single-Walled Carbon Nanotubes. In: The journal of physical chemistry C, Bd. 144, Nr. 33: S. 14025-14028

Abstract

We have studied the exciton recombination dynamics of individual (6,4) and (6,5) single-walled carbon nanotubes embedded in aqueous gels or deposited on glass surfaces. CoMoCat nanotubes systematically display short monoexponential photoluminescence (PL) decays presumably due to defects introduced during their synthesis. In contrast HiPco nanotubes can either display mono- or biexponential PL decays depending on the environmental conditions. Transition from bi- to monoexponential decays can be reproduced by a simple three level model taking into account defect-dependent nonradiative decay mechanisms.

• Dokumententyp: Zeitschriftenartikel
• Publikationsform: Publisher's Version
• Fakultät: Chemie und Pharmazie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 1932-7447
• Sprache: Englisch