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This paper reports the synthesis of gallium doped ZnO nanostructures via seed mediated growth hydrothermal technique and their application as photo-anode in DSSC. ZnO nanostructures have been grown on Flourin Tin Oxide (FTO). The precursor used in this research was zinc-nitrate-hexahydrate (Zn (NO3)2.6H2O) and hexa-metylene-tetramine (HMT) was chosen as surfactant. The growth process was carried out at various precursor solution concentrations, 0.1, 0.2, 0.3 and 0.4 M at 90°C for 8 hours. The growth solution was then doped with 1% wt gallium nitrate hydrate. The grown ZnO nanostructures were characterized by X-Ray Diffraction (XRD), Field Emission Scanning Electron Microscopy (FESEM) and Energy Dispersive X-Ray (EDX) and UV-Vis Spectroscopy. The samples were crystalline with wurtzite-hexagonal and their crystal orientation was (100), (002), (101), and (110). The morphological shape of the samples changed with the concentration of the precursor. The optical absorption decreased as the concentration increas... |
