| Summary: | 碩士 === 國立雲林科技大學 === 化學工程與材料工程系 === 103 === In this study, silver nanowire (AgNWs) transparent conducting electrodes are prepared and applied to the working electrodes for dye-sensitized solar cells (DSSCs). This study is divided into three parts. The first part is the synthesis of AgNWs and the preparation of AgNW films. By virtue of polyol synthesis method to control the reaction temperature(143℃) and time (60 minutes), the as-prepared AgNWs have length of 40～50μm and diameter of 40～50nm. When the AgNWs are coated on glass substrate, the surface resistance of AgNW films is 20.3Ω/sq and their transmittance can reach 85.06％ (compared with air). The second part is the preparation of protective layer. To solve the issue that the iodine electrolyte corrodes AgNWs, a protective layer is used as a barrier against iodine. Because the protective layer should feature high transmittance, high conductivity and resistance to electrolyte, we choose graphene oxide (GO) mixed poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT/PSS) in the weight ratio of 1:0.25. The transmittance of the hybrid layer enhances 9.73% compared to the pure PEDOT/PSS and its surface resistance is less than 711.2Ω. The last part is the assembly of DSSCs. The protective layer (GO:PEDOT/PSS) is covered on the surface of AgNWs films for the working electrodes of DSSCs. The maximum power conversion efficiency of the DSSCs with the GO:PEDOT/PSS hybrid layer can reach as high as 2.33% and is higher than those of DSSCs with a PEDOT/PSS layer (0.23%) and a GO layer (0.55%). This study showed the feasibility of AgNWs applied to the working electrode of DSSCs.
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