Femtosecond Pump-Probe Studies of Reduced Graphene Oxide Thin Films
arXiv:1003.1972 · doi:10.1063/1.3421541
Abstract
The dynamics of photocarriers in reduced graphene oxide thin films is studied by using ultrafast pump-probe spectroscopy. Time dependent differential transmissions are measured with sample temperatures ranging from 9 to 300 K. At each sample temperature and probe delay, the sign of differential transmission remains positive. A fast energy relaxation of hot carriers is observed, and is found to be independent of sample temperature. Our experiments show that the carrier dynamics in reduced graphene oxide is similar to other types of graphene, and that the differential transmission is caused by phase-state filling of carriers.
3 pages, 3 figures
References in corpus (7)
- Electric Field Effect in Atomically Thin Carbon Films
- Large-Area Synthesis of High-Quality and Uniform Graphene Films on Copper Foils
- Substrate-induced band gap opening in epitaxial graphene
- Ultrafast Relaxation Dynamics of Hot Optical Phonons in Graphene
- Femtosecond carrier dynamics and saturable absorption in graphene suspensions
- Slowing hot carrier relaxation in graphene using a magnetic field
- Broadband electromagnetic response and ultrafast dynamics of few-layer epitaxial graphene
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