Eu3+ doped gadolinium oxysulfide (Gd2O2S) nanostructures - synthesis and optical and electronic properties

摘要

One-dimensional Eu3+ doped gadolinium oxysulfide (Gd2O2S: Eu3+) nanotubesanorods have been synthesized via precursors of Gd(OH)(3) nanostructures using a hydrothermal technique. The blue-shifts in the optical spectra for the Gd2O2S: Eu3+ system corresponding to the fundamental absorption and Eu3+ -X2- ligand (X = O/S) charge transfer bands (CTBs) are significant (similar to 0.22-0.36 eV) with respect to the bulk counterpart. The nanotubes are good candidates for investigating the size-induced electrical and optical properties of functional oxysulfides. In order to identify the origin and nature of the electronic transitions observed in the visible region, optical and photo-induced impedance measurements have been extended to the nanotubes in this report.