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The Optical Resonances in Carbon Nanotubes Arise from Excitons
Abstract
Optical transitions in carbon nanotubes are of central importance for nanotube characterization. They also provide insight into the nature of excited states in these one-dimensional systems. Recent work suggests that light absorption produces strongly correlated electron-hole states in the form of excitons. However, it has been difficult to rule out a simpler model in which resonances arise from the van Hove singularities associated with the one-dimensional bond structure of the nanotubes. Here, two-photon excitation spectroscopy bolsters the exciton picture. We found binding energies of ∼400 millielectron volts for semiconducting single-walled nanotubes with 0.8-nanometer diameters. The results demonstrate the dominant role of many-body interactions in the excited-state properties of one-dimensional systems.
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Cited by
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Self-citationPolaritons in layered two-dimensional materials
Low, T., Chaves, A., Caldwell, J. D., Kumar, A., Fang, N. X., Avouris, P., Heinz, T. F., Guinea, F., Martin-Moreno, L., & Koppens, F. (2017) · Nature Materials · doi:10.1038/nmat4792 · Cited by 1,317
Self-citationCarrier dynamics in semiconductors studied with time-resolved terahertz spectroscopy
Ulbricht, R., Hendry, E., Shan, J., Heinz, T. F., & Bonn, M. (2011) · Reviews of Modern Physics · doi:10.1103/revmodphys.83.543 · Cited by 1,293
Self-citationBrightening of carbon nanotube photoluminescence through the incorporation of sp3 defects
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Biosensing with Fluorescent Carbon Nanotubes
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Metadata
- Authors
- Wang, F., Dukovic, G., Brus, L. E., & Heinz, T. F.
- Venue
- Science
- Published
- 2005-05-06
- Volume
- 308
- Issue
- 5723
- Pages
- 838-841
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W2113788261
- Cited by
- 1,262
- References
- 0
- FWCI
- 55.83
- Type
- journal article
- Language
- en
- Open access
- closed
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- Wang, F., Dukovic, G., Brus, L. E., & Heinz, T. F. (2005). The Optical Resonances in Carbon Nanotubes Arise from Excitons. Science. https://doi.org/10.1126/science.1110265
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