Exciton Energy Transfer in Pairs of Single-Walled Carbon Nanotubes
- 27 March 2008
- journal article
- letter
- Published by American Chemical Society (ACS) in Nano Letters
- Vol. 8 (5), 1363-1367
- https://doi.org/10.1021/nl080048r
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.Keywords
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