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- 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.Key Words : Dye-sensitized solar cells, Titanium double layer electrodes, Electron-beam evaporation*   :   **    :   ***   :  PDP §    :   † ,  :   E-mail : hedo@pusan.ac.kr  : 2010 11 30  : 2010 12 12

Fabrication of Transparent Conductive Oxide-less Dye-Sensitized Solar Cells Consisting of Titanium Double Layer Electrodes