We describe a multibeam interference lithography for creating 3D polymeric porous structures. The coating of a TiO2 shell and subsequent removal of the template produce holographically defined TiO2 (h-TiO 2) electrodes. We analyze the morphological features of the h-TiO2 electrodes and consider their applicability to dye-sensitized solar cells (DSSCs). Specifically, the performance of the h-TiO2 electrode was evaluated by comparison with a macroporous TiO2 electrode produced from colloidal crystals. The h-TiO2 structure possesses a larger specific area than the inverted colloidal crystals because of a bicontinuous air network with the TiO2 shell. Consequently, the h-TiO2 electrode can produce a 30% higher photogenerated electron current.
All Science Journal Classification (ASJC) codes
- General Materials Science