| 초록 |
Nowadays, the exploration of new photoelectrode architectures to improve the light-harvesting and charge-collection properties of sensitized solar cells and related devices has been regarded as a challenging work. Here, we demonstrate the TiO2 or ZnO nanobranched TiO2 photoelectrode for dye-sensitized solar cells (DSSCs) by sol-gel dipping, followed by hydrothermal method. This structure can provide the new pathways to overcome the low light harvesting of TiO2 nanotubes (TONTs) on Ti substrate to extend the specific surface area. More detail preparation of nanobranched TONTs will be discussed. Herein, nanobranched TONTs exhibit higher conversion efficiency regardless of the materials of nanobranches, attributed from the large surface area. Also, the characterization to prove the improved efficiency such as electrochemical impedance spectroscopy, incident photon to current efficiency, UV-Visible spectroscopy, and so on would be performed. |
