Nickel-Indium Sulphide Core-Shell Nonostructures Obtained by Spray-ILGAR Deposition

Ni nanowires (NWs) of different lengths were fabricated by pulsed potentiostatic deposition within pores ofpolycarbonate membranes. After template dissolution, substrates underwent sequential Spray-ILGAR®depositions of thin indium sulphide films. The effect of deposition temperature was also investigated. Forlow number of deposition cycles, results showed complete and uniform covering of metal over the entirelength of NWs, with formation of Ni - In2S3 core-shell structures. However, with increasing number ofdeposition cycles films became uneven and crusty, especially at higher temperatures, owing to thesimultaneous formation of nickel sulfide. This drawback was almost eliminated doubling the duration of thespray step.