Synthesis and characterization of arrested precipitation assembled Cu2Se thin films

Nanostructured thin films of copper selenide (Cu2Se) deposited by arrested precipitation technique (APT) with controlled release of ions at suitable pH=10.5. The deposited Cu2Se films were characterized for optical, structural, and morphological properties. Optical absorption study indicates that the band gap energy (2.26 eV) of material and shows visible radiation absorption. XRD shoe that APT is a favorable technique for the synthesis of pure nanocrystalline Cu2Se thin films with monoclinic crystal structure. An electrochemical impedance spectroscopy analysis confirms the charge transfer resistance.  X-ray photoelectron spectroscopy reveals stoichiometry at valance state of Cu2Se