Al-Ga co-doped ZnO nanostructures have been successfully grown using seed mediated growth hydrotermal method. The grown of Al-Ga co-doped ZnO nanostructures were used as an active material of DSSC. The growth of ZnO nanostructures has been done by varying percentage of concentration of the Al-Ga co-doped solution, namely Al 0.5, Al 1%, Al 1.5%, Al 2% with Ga 1% and Ga 0.25%, Ga 0.5%, Ga 0.75%, …