AVS 54th International Symposium | |
Thin Film | Thursday Sessions |
Session TF-ThP |
Session: | Aspects of Thin Films Poster Session |
Presenter: | M.F. Hossain, University of Toyama, Japan |
Authors: | M.F. Hossain, University of Toyama, Japan S. Biswas, University of Toyama, Japan T. Takahashi, University of Toyama, Japan Y. Kubota, University of Yokohama City, Japan A. Fujishima, Kanagawa Academy of Science and Technology, Japan |
Correspondent: | Click to Email |
Dye-sensitized solar cells (DSCs) have been under investigation for the past decade due to their attractive features such as high energy conversion efficiency and low production costs. The high light-to-energy conversion efficiencies achieved with DSCs may be attributed to the nano-porous TiO2 electrode. Reactive magnetron sputtering is a very promising technique for large-area uniform coating of TiO2 thin film and it has potential to control the crystallographic phase and micro-structure through the process of modification of different sputtering parameters. In this present study effort has been made to prepare low cost DSCs with sputter-deposited TiO2 electrode. Nano-porous TiO2 thin films were successfully deposited on SnO2:F substrate by facing target reactive magnetron sputtering deposition technique with different substrate temperatures ranging from room temperature to 400° C. Low cost chlorophyllin based-dye was used along with carbon paste electrodes (CPEs) on SnO2:F glass as a counter electrode. Incident photon-to-current efficiency (IPCE) was calculated for all the solar cells with different TiO2 thin films to evaluate the economic viability of this technique. The amount of dye incorporation was found to be highly dependent on the microstructure and the thickness of the film, as apparent from optical measurements. The variation of photoelectric conversion efficiency of the solar cells with different TiO2 films deposited at different substrate temperatures is discussed with the analysis of different microstructure of the TiO2 thin films and the corresponding dye-incorporation.