ELECTROSYNTHESIS OF INDIUM SULFIDE ON SULFUR-MODIFIED POLYCRYSTALLINEGOLD ELECTRODES

A new approach for the electrosynthesis of indium sulfide films is des cribed. This approach uses a sulfur-modified gold substrate, and relie s on the underpotential deposition of indium on it to form an indium s ulfide alloy. Combined cyclic voltammetry and electrochemical quartz c rystal microgravimetry scans demonstrate the veracity of this film gro wth approach. Photoelectrochemical measurements in a polysulfide redox medium show that the In2S3 layers thus grown are photoactive and beha ve as an n-type semiconductor. (C) 1998 Elsevier Science S.A. All righ ts reserved.