Electrochemical preparation and characterisation of ruthenium bisulphide films

This paper embodies the first report on the electrochemical deposition of RuS2 thin films. The as-deposited and heat-treated films (in argon atmosphere) were characterized by XRD, SEM and UV-VIS-NIR spectrophotometry. The polycrystalline deposits of RuS2 obtained indicated a cubic structure with a lattice constant of 5.685 Å, an average grain size around 3 μm, and an absorption co-efficient of 5 × 104 cm−1. The optical band gap was found to be 1.48 eV.