SYNTHESIS OF CdSe FILMS BY ANNEALING OF Cd/Se BILAYER

CdSe thin films are synthesized by depositing Cd/Se bilayer on glass substrates using vacuum evaporation technique. These bilayer films are subsequently annealed in tube furnace at various temperatures in argon atmosphere. Surface modification due to annealing at elevated temperatures is investigated by Scanning Electron Microscopy (SEM). X-ray Diffraction (XRD) studies are carried out for structural analysis of the asdeposited Cd/Se bilayer films and annealed films. In the present investigation, effect of annealing temperature on CdSe phase formation is studied. Effect of annealing on band gap of the bilayer films is studied by UV- VIS absorption spectroscopy.