Hydrothermal synthesis of Cu2S nanocrystalline thin film on indium tin oxide substrate: Morphology, optical and electrical properties

► We use a hydrothermal process to synthesize Cu2S nanocrystalline films. ► Glutathione content and reaction time have great effects on film morphologies. ► The Cu2S films show broad spectrum response in the near-infrared region. ► Morphology influences both optical and electrical properties of the thin films.