| Summary: | 碩士 === 國立成功大學 === 光電科學與工程學系 === 100 === Much attention has been paid to the developments of dye-sensitized solar cells since 1911. Transparent conductive glass (TCO) with properties of high transparency and conductivity had been used as electrode materials, which is the main cost of the DSC (Dye-sensitized Solar Cells). Here we introduce an electrode that can be applied on the DSC with a simple fabricating method and low-cost property. Titanium nitride, an inert and conductive metallic thin film, was deposited by dc sputter with various process parameters. In this report, we scrutinized the influence of different doping level of the nitrogen on the surface morphology, conductivity, atomic construction, crystalline orientation, reflected spectrum of the TiN thin film of 350 nm by changing Ar/N2 flow ratio. The TiN thin film with the doping level of 7.69% (with sheet resistance of 7.44 Ω/sq) exhibited a golden-brown appearance, which contributed to a great enhancement on the reflection. The current-voltage response of various sandwiched structure dummy cells showed electrical properties of different interfaces. It had been found that TiN thin film, which was similar to FTO, had a rectifying property in the contact with the electrolyte. The property of the reflection that extended the light can be used applying on the DSC as a working electrode to enlarge the current density. TiN thin film had been successfully applied on Back-contact cell with a performance of 0.2 % (1 sun).
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