The effect of the addition of Cu to AsSe9 glass (AsSe9Cux with 0 less than or equal to x less than or equal to 0.1), prepared by quenching the melt, was studied using X-ray diffraction, differential scanning calorimeter, scanning electron microscopy and de conductivity. Studies of the crystallization kinetics using the non-isothermal single scan technique shows that nuclei are already present in the as-quenched alloy and that the growth occurs in three dimensions. The addition of Cu increases the de conductivity by four orders of magnitude (1.4 x 10(-17)-4.6 x 10(-13)) and decreases the activation energy of conduction (0.63-0.44 eV). The structure examination reveals that the annealed materials (at temperature 40 degreesC for 72 h), consists of crystalline material of large grains (similar to 160 mum) embedded in less crystalline matrix. Furthermore, it shows that the increase in Cu content enhances the crystallization.