The Origin of Fluorescence from Graphene Oxide

• Published in: Scientific reports Vol. 2; no. 1; p. 792
• Main Authors: Shang, Jingzhi, Ma, Lin, Li, Jiewei, Ai, Wei, Yu, Ting, Gurzadyan, Gagik G.
• Format: Journal Article
• Language: English
• Published: London Nature Publishing Group UK 09.11.2012; Nature Publishing Group
• Subjects: 639/624; 639/624/399; 639/624/584; 639/766; Carbon; Conduction; Fluorescence; Graphene; Graphite; Graphite - chemistry; Humanities and Social Sciences; Introduced species; Kinetics; multidisciplinary; Optics; Oxidation-Reduction; Oxides - chemistry; Photonics; Physics; Recombination; Science; Spectrometry, Fluorescence; Spectrum analysis; Spectrum Analysis, Raman; Water - chemistry

Time-resolved fluorescence measurements of graphene oxide in water show multiexponential decay kinetics ranging from 1 ps to 2 ns. Electron-hole recombination from the bottom of the conduction band and nearby localized states to wide-range valance band is suggested as origin of the fluorescence. Exc...