Abstract
For application in dye-sensitized solar cells, anodic titania nanotube arrays must have high-aspect-ratio configuration to load more dyes thus result in higher conversion efficiency. Although geometry of the nanotubes is reported to be affected by a variety of anodizing parameters, electric field strength is the essential factor in determining the tube features (length, pore diameter, wall thickness, etc.). In the present work, electric field strength was varied by changing applied potential and working distance. Effect of the field strength on tube length was studied under selected field strengths for prolonged anodizing durations. An Ion Flux Model, in consideration of F − and H + concentration profiles within a single tube, is proposed to interpret the influence of the field strength on nanotube growth rate. The results indicate what essentially affects the tube length is the field strength which influences ion migration in electrolyte and ion transport in anodic barrier layer.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
