The DOI matches its Crossref record; 20 of the 20 references it cites were found in a registry or an index.
Photocurrent measurements of supercollision cooling in graphene
Open accessAbstract
The cooling of hot electrons in graphene is the critical process underlying the operation of exciting new graphene-based optoelectronic and plasmonic devices, but the nature of this cooling is controversial. We extract the hot-electron cooling rate near the Fermi level by using graphene as a novel photothermal thermometer that measures the electron temperature (T(t)) as it cools dynamically. We find the photocurrent generated from graphene p–n junctions is well described by the energy dissipation rate CdT/dt = −A(T3−Tl3), where the heat capacity is C = αT and Tl is the base lattice temperature. These results are in disagreement with predictions of electron–phonon emission in a disorder-free graphene system, but in excellent quantitative agreement with recent predictions of a disorder-enhanced supercollision cooling mechanism. We find that the supercollision model provides a complete and unified picture of energy loss near the Fermi level over the wide range of electronic (15 to ∼ 3,000 K) and lattice (10–295 K) temperatures investigated. A time-dependent study of the effective temperature of carriers in impurity-free graphene now indicates that a disorder-assisted mechanism is responsible for cooling hot electrons. Observation of this so-called supercollision contradicts the idea that electron–phonon interactions dominate cooling.
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Cites
Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
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Graphene photonics and optoelectronics
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Hot Carrier–Assisted Intrinsic Photoresponse in Graphene
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Self-citationDual-gated bilayer graphene hot-electron bolometer
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Hot Carrier Transport and Photocurrent Response in Graphene
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Ultrafast hot-carrier-dominated photocurrent in graphene
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Liu, C.-H., Chang, Y.-C., Norris, T. B., & Zhong, Z. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.31 · Cited by 1,207
Plasmon induced thermoelectric effect in graphene
Shautsova, V., Sidiropoulos, T., Xiao, X., Güsken, N. A., Black, N. C. G., Gilbertson, A. M., Giannini, V., Maier, S. A., Cohen, L. F., & Oulton, R. F. (2018) · Nature Communications · doi:10.1038/s41467-018-07508-z · Cited by 710
Sensitive room-temperature terahertz detection via the photothermoelectric effect in graphene
Cai, X., Sushkov, A. B., Suess, R. J., Jadidi, M. M., Jenkins, G. S., Nyakiti, L. O., Myers-Ward, R. L., Li, S., Yan, J., Gaskill, D. K., et al. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.182 · Cited by 632
Snapshots of non-equilibrium Dirac carrier distributions in graphene
Gierz, I., Petersen, J. C., Mitrano, M., Cacho, C., Turcu, I. C. E., Springate, E., Stöhr, A., Köhler, A., Starke, U., & Cavalleri, A. (2013) · Nature Materials · doi:10.1038/nmat3757 · Cited by 485
Metadata
- Authors
- Graham, M. W., Shi, S.-F., Ralph, D. C., Park, J., & McEuen, P. L.
- Venue
- Nature Physics
- Published
- 2012-12-02
- Volume
- 9
- Issue
- 2
- Pages
- 103-108
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W2043726318
- Cited by
- 337
- References
- 20
- FWCI
- 14.62
- Type
- journal article
- Language
- en
- Open access
- green
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