| 초록 |
The porosity of TiO2 electrode in a dye-sensitized solar cell (DSSC) can affect light absorption and electron diffusion that govern the overall photocurrent–voltage (I–V) characteristics. In this research, TiO2 photoanode was prepared by adding co-polymer materials, namely, styrene, n-butyl acrylate, and methacrylic acid (SBM) fabricated by soap-free emulsion copolymerization using a PEG-EEM macromonomer. From added co-polymer materials on TiO2 electroanode, surface of TiO2 electrode was formed many pore between TiO2 particles, such phenomena are shown in field emission scanning electron microscopy (FE-SEM). Photocurrent-voltage properties of TiO2 electrode with co-polymer were examined effect on an open-circuit voltage, photocurrent, fill factor, and energy conversion efficiency. At the TiO2 thin films used the co-polymer material with PEG-EEM 4wt%, a conversion efficiency of 7.1% was obtained when measured under illumination with AM 1.5 (100mWcm-2) simulated sunlight. |
