Study of electrical field distribution and growth of gradient-arrayed TiO2 nanotubes by electrochemical anodization
- 物理技术－会议论文 
In this paper, we report the simulation of electrical field distribution and growth of gradient arrayed TiO2 nanotubes by electrochemical anodization. A rectangle electrochemical electrode configuration, in which the end of cathode (Pt wire) is perpendicularly pointed to anode surface (Ti foil), is applied in NH4F glycol electrolyte. Electric field distribution on the surface of the titanium foil shows exponentially decreasing behavior as increasing the distance from the end of cathode. The relationship between nanotube diameter and applied voltage has been analyzed according to the images of Scanning Electron Microscopy (SEM) and simulated electrical distribution. These gradient TiO2 nanotube arrays might be a promising nano-architecture for increasing photon-to-electrical conversion efficiency of dye sensitized solar cells (DSSC). ? 2013 IEEE.