Optimization of Ultrasonic Process for the Fabrication of Dye Layers in Dye-Sensitized Solar Cell
| Autor: | HUANG, JUN-JIE, 黃俊捷 |
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| Rok vydání: | 2019 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 107 This study focuses on dye layer fabrication and optimization for dye-sensitized solar cells(DSSC). The traditional immersion method takes 8 to 24 hours. In this study, the fabrication of dye layers employ ultrasonic process which has advantages in terms of fabrication time and simplicity. Sodium copper chlorophyllin dye(SCC)、organic dye(SQ2) and ruthenium complex dye (N719) are chosen as dyes for the cells. Two methods are used such as the immersion method and the ultrasonic process. The immerse method of used here is from 8 to 40 hours. The influence of the immersion time on the conversion efficiencies of the cells is studied. The experimental results show that the optimal conversion efficiency of the SCC-DSSC is 0.31%, and that of the SQ2-DSSC is 0.83%；the optimal immersion time for these two types is 24 hours. However, N719-DSSC has an optimal conversion efficiency of 3.37% with an immersion time of 16 hours. On the other hand, the ultrasonic process has two control parameters which are the ultrasonic power and the resonant time. The influence of the ultrasonic power and the resonant time on the conversion efficiencies of the cells is studied. The SCC-DSSC has an optimal conversion efficiency of 0.34 % at a power of 200 W and a resonant time of 15 minutes. The SQ2-DSSC has an optimal conversion efficiency of 0.96% at a power of 160 W and a resonant time of 10 minutes. The N719-DSSC has an optimal conversion efficiency of 3.07% at a power of 200 W and a resonant time of 10 minutes. Therefore, the ultrasonic process introduced here dramatically reduces the fabrication time of the dye layers in DSSC to less than 20 minutes. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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