| 초록 |
Interest in the dye-sensitized solar cells(DSSCs) based on 1-dimensional Titania (TiO2) nanotubes that can provide minimized grain boundaries have been considerably increased. Among various methods including hydrothermal treatment, template-assisted deposition, and electrospinning, fabrication of self-organized TiO2 nanotube arrays by anodizing has been extensively investigated due to the defined nanoscale morphology and controllability of morphology by electrochemical conditions. Although several groups are studying on the anodized TiO2 nanotube based DSSCs, the efficiency is still low compared to the conventional TiO2 nanocrystalline based system. Here, we report on modification of self-organized TiO2 nanotubes with secondary inorganic nanostructures to improve the dye absorption and injection of electrons from excited dye to conduction band of TiO2. In addition, novel counter electrode, resulting in the improvement light harvesting efficiency, will be introduced. |
