| Summary: | 碩士 === 逢甲大學 === 纖維與複合材料學系 === 103 === The Dye-sensitized solar cell (DSSC) have been widely studied as the one of potential solar cell devices in recent years with the characteristics of low-cost, simple fabrication process, less contamination, high transparency and having flexible applications.
In this study, zinc oxide (ZnO) was used as working electrode because of high photoactive, high electron mobility and long cycle life. For the purpose of promoting efficiency, Ag@TiO2 were mixed into zinc oxide, which can prevent silver nanoparticles from corroding by electrolyte. In addition, the silver nanoparticles were also added in Pt counter electrode, which can improve the efficiency and current density of whole device.
The results show that ZnO working electrode mixed Ag@TiO2 can enhance efficiency significantly. In the optimal manufacturing process, APTES coupling agent was added as functional agent in preparation of Ag@TiO2. The working electrode which composited by zinc oxide paste with 0.2 wt% Ag@TiO2, and the FTO counter electrode which was functionalized by APTES with silver nanoparticles coupling. This optimal condition had the best current density (11.92 mA/cm2) and photoelectric conversion efficiency (2.4 %). According to this result, the optimal DSSC device was compared with ZnO working and Pt counter couples. The improvement of photoelectric conversion efficiency is 71.4%.
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