Abstract
The photoanode layer which is generally an oxide semiconductor material plays an important role in dye-sensitized solar cells. Photoanode facilitate electron transfer from dye to external circuit and electron injection from the dye. Photoanode should have a high surface area as well as high pore size to accommodate the dye sensitizer capacity optimally. To improve the function of TiO2-based photoanode, it can be done by adding ZnO nanoparticles. The characterization results showed that the addition of nanoparticles did not change the structure of each component, ZnO had a hexagonal wurtzite structure while TiO2 had a tetragonal structure in the anatase phase. The surface morphology of ZnO, TiO2 and TiO2/ZnO nanocomposites is quite homogeneous with spherical particles. The addition of ZnO nanoparticles affects the specific surface area and pore volume of TiO2/ZnO nanocomposites. Compared to the specific surface area and pore volume of TiO2, the addition of ZnO nanoparticles increased the specific surface area by 68% and the specific pore volume to three times the TiO2 pore volume
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