Heterogeneous Fluorescence Intermittency in Single Layer Reduced Graphene Oxide
journal contributionposted on 2015-07-08, 00:00 authored by Jixin Si, Sándor Volkán-Kacsó, Ahmed Eltom, Yurii Morozov, Matthew P. McDonald, Masaru Kuno, Boldizsár Jankó
We provide, for the first time, direct experimental evidence for heterogeneous blinking in reduced graphene oxide (rGO) during photolysis. The spatially resolved intermittency originates from regions within individual rGO sheets and shows 1/f-like power spectral density. We describe the evolution of rGO blinking using the multiple recombination center (MRC) model that captures common features of nanoscale blinking. Our results illustrate the universal nature of blinking and suggest a common microscopic origin for the effect.