In this paper,copper indium gallium selenium(CIGS) thin films were deposited by RF magnetron sputtering from a single quaternary target without any additional selenization,followed by one-stage annealing at different temperature(150-350℃) in argon vacuum(100Pa).The as-deposited and annealed CIGS thin films were characterized by XRD,SEM,EDS,UV-Vis spectrophotometer,four point probe instrument.Measurement results show that the CIGS thin film exhibit amorphous feature when depositing at room temperature.Phase ...