Photovoltaic performance of Dye-sensitized Solar Cells with low-temperature processed TiO2 electrodes

• Main Authors: Hong-Ye Wang, 王弘曄
• Other Authors: Yu-Shyan Lin
• Format: Others
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/12991054566037250905

碩士 === 國立東華大學 === 材料科學與工程學系 === 103 === In this thesis, dye-sensitized solar cells (DSSCs) with low-temperature processed TiO2 electrodes are studied. For this purpose, TiO2 colloid is added to the Degussa P25-TiO2 paste. The TiO2 electrodes is formed by doctor-blading method. The addition of the 20% TiO2 colloid can build the interconnection with P25-TiO2 particle for the fast transport of electrons. The TiO2 colloid can be used as the binding agent to supersede the high temperature sintering process.X-ray diffraction (XRD) is used to determine the crystallographic structure of TiO2 colloid and P25-TiO2. The surface morphology of thin films is studied using field emission scanning electron microscopy (FE-SEM). The amount of dye adsorbed is measured by UV-visible spectrophotometer. Intensity modulated photocurrent spectroscopy and intensity modulated photovoltage spectroscopy (IMPS/IMVS) are studied. Furthermore, electrochemical impedance spectroscopy (EIS) analysis is performed. The conversion efficiency and short-circuit current of the studied DSSC containing 20 wt% of TiO2 colloid is four times higher than that obtained in cell without any TiO2 colloid.