title: Synthesis, characterization, and photoluminescence of Er2O3-Er2SO2nanoparticles on reduced graphene oxide.
abstract: Thermal reduction of erbium nitrate and S-doped reduced graphene oxide (rGO) mixture resulted in the formation of small (∼3-18 nm sized) Er2O3-Er2SO2nanoparticles with a high degree of surface coverage on the reduced GO support. The morphology, structure, and the chemical composition of the synthesized nanoparticles have been studied by scanning and transmission electron microscopy, x-ray photoelectron spectroscopy, x-ray diffraction, and by optical spectroscopies. The rGO-supported Er2O3-Er2SO2nanoparticles (Er2O3-Er2SO2/rGO) demonstrate sufficiently strong light emission (luminescence and upconversion) in the visible and near-infrared range via intra-4f Er3+optical transitions. The reported synthetic approach demonstrates a novel method for synthesizing Er-containing nanoparticles for sensor applications.
authors.affiliation: Department of Materials and Metallurgical Engineering, New Mexico Tech, Socorro NM 87801, United States of America.
authors.forename: Nikolai G
authors.initials: NG
authors.lastname: Kalugin
authors.forename: Aaron J
authors.initials: AJ
authors.lastname: Roy
authors.forename: Kateryna
authors.initials: K
authors.lastname: Artyushkova
authors.forename: Alexey
authors.initials: A
authors.lastname: Serov