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Title: Femtosecond UV-pump/visible-probe measurements of carrier dynamics in stacked graphene films
Authors: Shang, J.
Luo, Z.
Cong, C.
Lin, J.
Yu, T. 
Gurzadyan, G.G.
Issue Date: 18-Oct-2010
Citation: Shang, J., Luo, Z., Cong, C., Lin, J., Yu, T., Gurzadyan, G.G. (2010-10-18). Femtosecond UV-pump/visible-probe measurements of carrier dynamics in stacked graphene films. Applied Physics Letters 97 (16) : -. ScholarBank@NUS Repository.
Abstract: The transient differential transmission (ΔT/T) spectra of graphene were obtained from 380 (3.3 eV) to 670 nm (1.9 eV). The intraband carrier equilibration by carrier-carrier scattering occurred within 60 fs. The subsequent carrier relaxation process was governed by carrier-optical phonon scattering and had linear dependence on the probe photon energy (Epr); lifetimes ranged from 180 to 90 fs for Epr from 2.1 to 2.8 eV. Negative ΔT/T signals in kinetic curves were discussed and assigned to thermal diffusion and shrinkage of band separation caused by lattice heating. © 2010 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3504704
Appears in Collections:Staff Publications

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