Tailored Fabrication of Transferable and Hollow Web-Like Titanium Dioxide Structures

Result date: 01/01/2016
Author: A. Hiltunen
Institute: Chemistry and Bioengineering, Tampere University of Technology, Tampere, FINLAND
Publication: ChemPhysChem
Instrument: Argus, DAR 400
We report on the preparation of web-like titanium dioxide thin ?lms using atomic layer deposition on cellulose biotemplates. The method produces a TiO2-web, which is ?exible and transferable from the deposition substrate to that of the end-application. Removal of the cellulose template by calcination converts the amorphous titania to anatase crystal and gives the structure hollow morphology. The TiO2-webs are thoroughly characterized using electron microscopy, XRD and XPS techniques giving new insight into manufacturing of porous titanium dioxide structures using template based methods. Functionality and integrity of the TiO2 hollow web-like thin ?lms were successfully con?rmed by applying them as electrodes in dye-sensitized solar cells.