Parametric Optimization of Experimental Conditions for Dye-Sensitized Solar Cells based on Far-red Sensitive Squaraine Dye

India-Japan Expert Group Meeting on Biomolecular Electronics & Organic Nanotechnology for Environment Preservation

物理学;生物科学;生态环境科学

Morimoto, Takuya^1 ; Fujikawa, Naotaka^1 ; Ogomi, Yuhei^1 ; Pandey, Shyam S.^1 ; Hayase, Shuzi^1

Graduate School of Life Science and Systems Engineering, Kyushu Institute of Technology, 2-4 Hibikino, Wakamatsu, Kitakyushu

808-0196, Japan^1

关键词: Device performance;    Experimental conditions;    Mesoporous TiO2;    Molar extinction coefficient;    Parametric optimization;    Photoconversion efficiency;    Redox electrolytes;    Squaraine dyes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/704/1/012002/pdf
DOI  :  10.1088/1742-6596/704/1/012002

来源: IOP

【 摘 要 】

A far-red sensitive unsymmetrical squaraine dye SQ-41 has been synthesized and subjected to the fabrication of dye-sensitized solar cells by varying the various parameters in order attain optimum photoconversion efficiency (η). It has been demonstrated that an optimum ratio of dye to coadsorber, thickness of mesoporous TiO2layer, redox electrolyte and surface treatment are necessary to enhance overall external η. In the case of surface treatment, it has been shown to exhibit pronounced device performance when both of the FTO as well mesoporous TiO2surfaces were treated with aqueous TiCl4. In spite of very high molar extinction coefficient of dye SQ-41, 10-12 m thickness of mesoporous TiO2was found to be necessary to attain the maximum η.