| Summary: | 碩士 === 國立成功大學 === 化學工程學系碩博士班 === 95 === In this study, cadmium sulfide quantum dots (CdS QDs) were used as a sensitizer of dye-sensitized Solar Cells (DSSCs). CdS QDs were deposited on the titania photoelectrodes using chemical bath deposition (CBD). Here, we focused on the discussion of cell efficiency for different structure titania photoelectrodes with micro/nano mutilayer porous structure made by spin coating method.From the experimental results, the assembly of the larger size titania particles (PT-501-A, 100nm) on the outer layer was not only with larger holes and scattering effect, but also with contribution to photocurrent by CdS QDs deposited on the larger size particles. In the different structures, ITO/6.5μm P25/3.7μm PT-501A（100nm）/CBD3 has the highest cell efficiency (1.14%). Therefore, micro/nano multilayer structure design of porous titania photoelectrodes was also suitable for improving cell performance of quantum dots dye-sensitized Solar Cells, attributed to the effect of scattering particles in enhancing the light harvesting efficiency.
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