| Title |
Fabrication of Transparent Conductive Oxide-less Dye-Sensitized Solar Cells Consisting of Titanium Double Layer Electrodes |
| Authors |
심충환(Shim, Choung-Hwan) ; 김윤기(Kim, Yun-Gi) ; 김동현(Kim, Dong-Hyun) ; 이해준(Lee, Hae-June) ; 이호준(Lee, Ho-Jun) |
| DOI |
https://doi.org/10.5370/KIEE.2011.60.1.114 |
| Keywords |
Dye-sensitized solar cells ; Titanium double layer electrodes ; Electron-beam evaporation |
| Abstract |
Dye-Sensitized Solar Cells(DSSCs) consist of a titanium dioxide(TiO_2) nano film of the photo electrode, dye molecules on the surface of the TiO_2 film, an electrolyte layer and a counter electrode. But two transparent conductive oxide(TCO) substrates are estimated to be about 60[%] of the total cost of the DSSCs. Currently novel TCO-less structures have been investigated in order to reduce the cost. In this study, we suggested a TCO-less DSSCs which has titanium double layer electrodes. Titanium double layer electrodes are formed by electron-beam evaporation method. Analytical instruments such as electrochemical impedance spectroscopy, scanning electron microscope were used to evaluate the TCO-less DSSCs. As a result, the proposed structure decreases energy conversion efficiency and short-circuit current density compared with the conventional DSSCs structure with FTO glass, while internal series impedance of TCO-less DSSCs using titanium double layer electrodes decreases by 27[%]. Consequently, the fill factor is improved by 28[%] more than that of the conventional structure. |