The study on the preparation of TiO2-WO3 electrode and Characteristics of Cell in Dye Sensitized Solar Cell

• Main Authors: Wen-Liang Huang, 黃文亮
• Other Authors: Chao-Chen Yang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/16495004707205886814

碩士 === 雲林科技大學 === 化學工程與材料工程研究所 === 96 === The preparation of work electrode used in dye sensitized solar cell (DSSC) was explored. The work electrode of TiO2-WO3 nano composite material was prepared by sol-gel method. The effect of different WO3 content and annealing temperature on the properties of work electrode material has been discussed. The samples were characterized by various analytical techniques, such as Thermo gravimetric analysis (TGA), X-ray Diffraction (XRD), Energy Dispersive X-ray analysis (EDX), Scanning Electron Microscopy (SEM), Diffuse Reflectance UV-vis spectra and Brunauer-Emmett-Teller (BET) adsorption analysis. The results of XRD reveal that calcination temperature should be set at 500℃ for 1hr to get the anatase crystal with high photocatalytic activity.Through the analysis of SEM micrograph, it is found that the addition of WO3 can reduce effectively the agglomeration of TiO2-WO3 particles ,and enhance the surface area, resulting in the dye adsorption increasing.The result reveals that 5% WO3 introduced into the TiO2-WO3 work electrode will obtain the 20 nm grain size and about 3∼4 μm film thickness. The structure of DSSC designed as ITO/TiO2-WO3/dye/electrolyte/Pt/ITO. The efficiency (η) of dye sensitized solar cell is calculated by measuring open-circuit voltage (Voc), short-circuit current (Isc) and fill factor (FF). The results of experiment reveal that TiO2-WO3 electrode applied in dye sensitized solar cell was prepared by sol-gel method. The condition is the 5% WO3 added into TiO2 and sintering at 500℃. However,the photoelectric conversion efficiency of TiO2-WO3 electrode increases about 95% than the pure TiO2 electrode, and the result will be discussed.