Optimization of Fabrication of Dye-Sensitized Solar Cells with Spray Deposition Method

• Main Authors: Yu-Ren Chen, 陳俞任
• Other Authors: Yeong-Lin Lai
• Format: Others
• Language: zh-TW
• Published: 2014
• Online Access: http://ndltd.ncl.edu.tw/handle/43636022245306101080

碩士 === 國立彰化師範大學 === 機電工程學系 === 102 === In this thesis, the fabrication of dye-sensitized solar cells is studied using spray deposition method, through the optimization method to improve working electrode quality. The goal of the study is to reduce the variation of the spray process. Firstly, the process of experiment plan is to optimize the TiO2 solution parameters of the spray method. The experiment orthogonal array uses four factors and three levels, and finds the optimization of the TiO2 solution parameters. It can enhance the efficiency of the DSSC from 1.06% of the initial setting to 3.25% of the optimal setting. Secondly, the Taguchi method is used to obtain the optimal TiO2 process parameters. It can enhance the efficiency of the DSSC from 2.18% of the initial setting to 3.74% of the optimal setting. Therefore, the optimal solution and the optimal process parameters are combined to be the optimal spray parameters. The best efficiency of the DSSC with the single TiO2 layer is 4% using the optimal spray parameters. The DSSC with a double TiO2 layer, consisting of the stacked 14nm and 21nm TiO2 particles, is studied. The 14nm TiO2 particles are sprayed first on the FTO substrate, and the 21nm TiO2 particles are then coated on the compact 14nm TiO2 layer. Finally, the cell efficiency can achieve 5.43%. The spray method can be applied for non-plane substrates and has the advantages of low cost and multilayer structure. In the future, the DSSCs using the spray deposition method have great potential of development.