Prepared Cu_2ZnSnS_4 Powder Material by Solid State Reaction Method

Cu2ZnSnS4 powder was prepared by solid phase reaction method.The powder samples' Crystal structure and micro morphology were characterized with SEM and XRD,and the optical properties of samples was tested by UV-Vis-NIR spectrophotometer.The relationship among of heat treatment temperature with CZTS powder's crystal structure,optical absorption coefficient and the band gap effect was studied.The result shows that the Kesterite structure CZTS powder was succesed prepared by ing solid phase method while annealing temperature exceed 500 ℃.The CZTS power is formed with 50 μm little particles,and the band gap width of CZTS power is 1.45 eV.The CZTS power can be used to prepare the CZTS target.