Exciton Energy Transfer in Pairs of Single-Walled Carbon Nanotubes

Qian, Huihong; Georgi, Carsten; Anderson, Neil; Green, Alexander A.; Hersam, Mark C.; Novotny, Lukas und Hartschuh, Achim (2008): Exciton Energy Transfer in Pairs of Single-Walled Carbon Nanotubes. In: Nano Letters, Bd. 8, Nr. 5: S. 1363-1367

Abstract

We studied the exciton energy transfer in pairs of semiconducting nanotubes using high-resolution optical microscopy and spectroscopy on the nanoscale. Photoluminescence from large band gap nanotubes within bundles is observed with spatially varying intensities due to distance-dependent internanotube transfer. The range of efficient energy transfer is found to be limited to a few nanometers because of competing fast nonradiative relaxation responsible for low photoluminescence quantum yield.

• Dokumententyp: Zeitschriftenartikel
• Publikationsform: Publisher's Version
• Fakultät: Chemie und Pharmazie
• Themengebiete: 500 Naturwissenschaften und Mathematik > 540 Chemie
• ISSN: 1530-6984
• Sprache: Englisch