Design and Characteristic Analysis of Arrayed Dye-sensitized Solar Cell Fabricated by Screen-printed Technique

• Main Authors: Jui-En Hu, 胡睿恩
• Other Authors: Jung-Chuan Chou
• Format: Others
• Language: en_US
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/23229891547252007763

碩士 === 國立雲林科技大學 === 電子與光電工程研究所碩士班 === 101 === In this thesis, the dye-sensitized solar cell (DSSC) was investigated to be an arrayed large area module, which was fabricated on the indium tin oxide-polyethylene terephthalate (ITO-PET) substrate and fluorine doped tin oxide (FTO). The silver paste was fabricated as conducting wire of arrayed DSSC module, which connected between cell and cell. Finally, the difference of different substrate was compared in this thesis. The amount of dye adsorption was decided by thickness of TiO2 layer, the appropriated TiO2 thickness could increase the short-circuit current density of DSSC and decreased the resistance of TiO2 layer, effectively. According to the experiment result, the optimal thickness of TiO2 layer was 19.63 μm, the short-circuit current density was increased from 4.44 mA/cm2 to 5.28 mA/cm2 and the conversion efficiency was increased from 1.89 % to 2.15 %. The oxidation-reduction reaction of inner electrochemical of DSSC was decided by thickness of electrolyte. The appropriate electrolyte thickness could increase the redox rate of DSSC and decreased the distance of electron transmission, effectively. The optimal thickness of electrolyte was 171.75 μm, the short-circuit current density and the conversion efficiency were 1.88 mA/cm2 and 0.45 %, respectively. Different quantities and direction of arrayed DSSC on FTO glass substrate were investigated. The area and different quantities of TiO2 layer were 0.48 cm2 and 1~3 strips, respectively. When the TiO2 were 3 strips of vertical and 1 strip of horizontal had optimal characteristic parameters, which was influenced the applied voltage direction and inner resistance of TiO2 layer. The optimal parameters of short-circuit current density and conversion efficiency as follows: 3 strips of vertical TiO2 layer were 2.71 mA/cm2 and 1.27 %, 1 strip of horizontal TiO2 layer were 3.56 mA/cm2 and 1.79 %. The series, parallel, parallel-series and series-parallel connection of arrayed dye-sensitized solar cell module were analysis by electrochemical impedance spectroscopy. Finally, the arrayed DSSCs module was successful to drive the LED.