| 초록 |
One-dimensional (1D) piezoelectric nanostructures have been intensively developed due to their remarkable physical and electrical properties, which can induce an effective piezoelectric characteristic in thin film system. So far, serious problems of 1D nanostructure for feasible piezoelectricity have been considered such as nanostructure agglomeration, low area density, and a conductive substrate. In this study, vertically aligned M-shaped BaTiO3 nano-bundle arrays were designed on FTO (fluorine doped tin oxide) substrates via two-step process to adjust precisely piezoelectric nanostructures of area density and aspect ratio. The M-shaped nanostructures were found to exhibit optimum area density without non-agglomeration as well as the high conversion rate of BaTiO3 from TiO2. Based on SEM (scanning electron microscope), XRD (X-ray diffraction), and PFM (piezoelectric forced microscopy) characterizations, effective electrical voltage might be expected from M-shaped piezoelectric nano-bundle arrays. |
