| 초록 |
In order to improve the conversion efficiency of dye-sensitized solar cells (DSSCs), it is very important to optimize their mesoporous TiO2 electrode [1,2]. Accordingly, we prepared the photo-electrode using a commercial Dyesol paste deposited on F-doped SnO2 (FTO) glass substrates by screen printing method with different thickness (5, 9 and 14 µm). Mass transport of N719 dye and electrolytes on the prepared photo-electrode was systematically investigated employing adsorption kinetic and electrochemical analysis (Fig. 1). Also, the prepared photo-electrodes were evaluated based on the properties of light transmittance, electrochemical impedance spectra, and photovoltaic conversion efficiency. The results showed that the conversion efficiency (geometrical area of 1 cm2) of DSSC with different TiO2 film thickness was highly dependent on the mass transport of a dye molecule and a triiodide/iodide redox couple. |
