Tuesday, April 2, 2013

Hot carrier generation in graphene !

In a recent study, researchers have analyzed different pathways contributing to the ultrafast relaxation of photoexcited carriers in graphene using tetra-hertz pump spectroscopy. The results indicate that carrier-carrier scattering is the dominant mechanism leading to the generation of hot electrons in graphene. These hot carriers in turn can drive current in graphene enabling its high efficiency optoelectronic applications.

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