Rod- and wire-like morphologies of tin oxide developed with plasma oxidation after electrodeposition

A new manufacturing method has been developed to prepare films composed of Sn-rich SnO2 wires and rods using electrodeposition and subsequent plasma oxidation of pure Sn. The morphology of Sn-rich tin oxide grains varied significantly depending on the deposition current density. After a DC plasma oxidation process, the Sn. SnO, and SnO2 phases were obtained as spherical grains when the previous electrodeposition was carried Out at 6 A/dm(2) current density. The wire morphology was obtained only when the electrodeposition current was below 3 A/dm(2). The film produced at 1.5 A/dm(2) and then plasma oxidized showed wire morphology with single crystals of SnO2 that formed in the (110) direction. Crown Copyright (C) 2008 Published by Elsevier B.V. All rights reserved.