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Title: Femtosecond pump-probe studies of reduced graphene oxide thin films
Authors: Ruzicka, B.A.
Werake, L.K.
Zhao, H.
Wang, S. 
Loh, K.P. 
Issue Date: 26-Apr-2010
Citation: Ruzicka, B.A., Werake, L.K., Zhao, H., Wang, S., Loh, K.P. (2010-04-26). Femtosecond pump-probe studies of reduced graphene oxide thin films. Applied Physics Letters 96 (17) : -. ScholarBank@NUS Repository.
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 the 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 effects of carriers. © 2010 American Institute of Physics.
Source Title: Applied Physics Letters
ISSN: 00036951
DOI: 10.1063/1.3421541
Appears in Collections:Staff Publications

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