Nanostructures of graphene have recently drawn increasing interest because of their tunable, finite bandgap. Since graphene is two-dimensional and is made of carbon, a light element, quantum confinement in graphene is expected to result in phenomena dramatically different from nanostructures of other semiconductors. For example, the dimensionality and the low dielectric constant of graphene will lead to stronger carrier interactions, having profound implications in the energy relaxation dynamics when the graphene nanostructures are photoexcited. In this talk I will present our recent work on the energy relaxation in photoexcited colloidal graphene quantum dots. The size effect, as well as that of symmetry, will be discussed.

Energy relaxation in photoexcited colloidal graphene quantum dots

246th National Meeting (2013)

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