The DOI matches its Crossref record; 17 of the 17 references it cites were found in a registry or an index.
Ultrafast relaxation dynamics of hot optical phonons in graphene
Open accessAbstract
Using ultrafast optical pump-probe spectroscopy, we study the relaxation dynamics of hot optical phonons in few-layer and multilayer graphene films grown by epitaxy on silicon carbide substrates and by chemical vapor deposition on nickel substrates. In the first few hundred femtoseconds after photoexcitation, the hot carriers lose most of their energy to the generation of hot optical phonons which then present the main bottleneck to subsequent cooling. Optical phonon cooling on short time scales is found to be independent of the graphene growth technique, the number of layers, and the type of the substrate. We find average phonon lifetimes in the 2.5–2.55 ps range. We model the relaxation dynamics of the coupled carrier-phonon system with rate equations and find a good agreement between the experimental data and the theory. The extracted optical phonon lifetimes agree very well with the theory based on anharmonic phonon interactions.
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Large-scale pattern growth of graphene films for stretchable transparent electrodes
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Large Area, Few-Layer Graphene Films on Arbitrary Substrates by Chemical Vapor Deposition
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Measurement of ultrafast carrier dynamics in epitaxial graphene
Dawlaty, J. M., Shivaraman, S., Chandrashekhar, M., Rana, F., & Spencer, M. G. (2008) · Applied Physics Letters · doi:10.1063/1.2837539 · Cited by 699
Self-citationGeorge, P. A., Strait, J., Dawlaty, J., Shivaraman, S., Chandrashekhar, M., Rana, F., & Spencer, M. G. (2008) · Nano Letters · doi:10.1021/nl8019399 · Cited by 686
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Metadata
- Authors
- Wang, H., Strait, J. H., George, P. A., Shivaraman, S., Shields, V. B., Chandrashekhar, M., Hwang, J., Rana, F., Spencer, M. G., Ruiz-Vargas, C. S., & Park, J.
- Venue
- Applied Physics Letters
- Publisher
- AIP Publishing
- Published
- 2010-02-22
- Volume
- 96
- Issue
- 8
- ISSN
- 0003-6951 (ISSN-L)
- 1077-3118
- OpenAlex
- W1987057641
- Cited by
- 267
- References
- 17
- FWCI
- 13.59
- Type
- journal article
- Language
- en
- Open access
- green
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