Homogeneous electrochemical deposition of in on a Cu-covered Mo substrate for fabrication of efficient solar cells with a CuInS2 photoabsorber

► Successful homogeneous deposition of indium on a Cu-deposited Mo/glass substrate. ► Effects of organic additives for efficient indium electrodeposition. ► Fabrication of a CuInS2 film having a good photoelectrochemical response. ► Achievement of high and reproducible sunlight-conversion efficiency.