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Femtosecond carrier dynamics in bulk graphite and graphene paper

Femtosecond carrier dynamics in bulk graphite and graphene paper,10.1016/j.cplett.2011.01.052,Chemical Physics Letters,F. Carbone,G. Aubock,A. Cannizz

Femtosecond carrier dynamics in bulk graphite and graphene paper  
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Femtosecond white-light continuum probe transient absorption and reflectivity measurements of bulk graphite and graphene paper are reported. In graphite, the relaxation of photoinduced electron–hole pairs happens through in-plane electron–electron and electron–phonon scattering in ≃200fs, while the ps dynamics is due to the modulation of the electronic structure by out-of-plane structural motions. The ps dynamics of the optical signal is strongly reduced in graphene paper, where the out-of-plane bond is disrupted, while the short component of the dynamics is identical in both materials. These results show that in 2D-graphene, the carrier relaxation occurs in ≃200fs.
Journal: Chemical Physics Letters - CHEM PHYS LETT , vol. 504, no. 1, pp. 37-40, 2011
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