MIS Structures with Ruo2 Schottky Contact for Photoelectrochemical Water Splitting

This paper describes fabrication and characterisation of Ruo2 based metal-insulator-semiconductor (MIS) structure for photoelectrochemical water splitting. The expected high catalytic activity, transparency, stability and conductivity of Ruo2 make this material highly appealing for preparation of a photoanode with high performance. Optical, electrical and photoelectrochemical properties of Ruo2based MIS structures are compared with MIS structures with a Ni catalytic layer. The lower overpotential $V_{\text{op}}=0.12\mathrm{V}$ of Ruo2structure compared to $V_{\text{op}}=0.3\mathrm{V}$ obtained for Ni structure as well as higher saturation photocurrent indicates promising application of the developed Ruo2 structures for solar water splitting.