Structural, morphological and optical characterisation of electrodeposited ZnSe thin films

Department of Physics, Khadir Mohideen College, Adirampattinam-614 701, Tamilnadu, India E-mail : aismma786@gmail.com Nano Biochip Research Group, Institute of Nano Electronic Engineering (INEE), Universiti, Malaysia Perlis (UniMAP), 01000 Kangar, Perlis, Malaysia Department of Physics, Devanga Arts College, Aruppukkottai, Virudhunagar District-626 101, Tamilnadu, India MEMS and Sensors Division, SENSE, Vellore Institute of Technology, Vellore-632 014, Tamilnadu, India Electro Chemical Material Science Division, (CSIR) Central Electro Chemical Research Institute, Karaikudi-630 003, Tamilnadu, India Nanotechnology Centre, University of Bahrain, PO Box 32038, Kingdom of Bahrain Department of Physics, College of Science, University of Bahrain, PO Box 32038, Kingdom of Bahrain The basic aim of this study is to present the room temperature synthesis of ZnSe thin film by varying doping concentration of selenium oxide on ITO plate using a relatively simple and low cost traditional electrodeposition technique. X-Ray diffraction confirms the formation of single cubic ZnSe phase with a preferred orientation along (111) direction with an average value of the crystallite size around 37 nm. Optical studies reveal a transmittance above 80% for lower SeO2 concentration ( 5%) with an energy bandgap around 2.75 eV. Photoluminescence analysis shows the presence of mainly 2 bands, narrow PL band centered at 487 nm and broad photoemission band centered at 531 nm. Scanning electron microscopy observations reveal the formation of dense nanostructured films