Ni doped ZnO nanostructures have been successfully grown using seed mediated hydrothermal method, trough 2 steps, namely seeding and growth process. The growth of ZnO nanostructures has been done by varying concentration of the Ni doped solution, namely 8 mM dan 10 mM with the growth temperature of 90°C in 7 hours. The grown ZnO nanostructures were characterized by using Ultraviolet-Visible Sp…