工業革命之後全世界的用電量持續增加，但是火力發電使用的化石燃料會排放溫室氣體，造成全球暖化，使用環保的替代能源刻不容緩，而太陽能是目前環保能源中佔的比例最高，因而開發了許多種太陽能電池，其中染料敏化太陽能電池與其他類型的太陽能電池相比具有原料成本低、容易製作和可以藉由室內光源發電等優勢，使得許多研究人員投入研發染料敏化太陽能電池。
本論文製作硫化鎳加上鎳奈米線的奈米結構作為染料敏化太陽能電池中的對電極，利用簡便且便宜的水熱法合成硫化鎳和用多元醇法合成鎳奈米線，透過X光繞射儀和傅立葉轉換紅外光譜儀確認合成出來的材料的準確性。除此之外，實驗藉由海爾貝克陣列改變鎳奈米線在硫化鎳薄膜排列，提升電子傳輸率。利用四點探針觀察片電阻的變化，使用光學顯微鏡和掃描式電子顯微鏡觀察鎳奈米線排列狀況，最後進行元件分析。濃度為0.130mg/ml的鎳奈米線陣列於硫化鎳薄膜上的對電極有最高的轉換效率8.94%，比常用於染料敏化太陽能電池的對電極材料白金高出1.57%。很大的潛力可以替代白金作為染料敏化太陽能電池中對電極的材料，降低成本，使染料敏化太陽能電池在未來商用更進一步。

With the increasing global electricity demand following the industrial revolution, the use of fossil fuels in thermal power generation has resulted in greenhouse gas emissions and global warming. It is imperative to urgently develop environmentally friendly alternative energy sources. Solar energy, which currently holds the largest share among renewable energy sources, has led to the development of various types of solar cells. Among them, dye-sensitized solar cells (DSSCs) have advantages such as low raw material costs, ease of fabrication, and the ability to generate electricity from indoor light sources. These advantages have led to continuous research and development by many researchers.
In this study, a nanohybrid structure of nickel sulfide with nickel nanowires was fabricated as the counter electrode in dye-sensitized solar cells. Nickel sulfide was synthesized using a simple and cost-effective hydrothermal method, while nickel nanowires were synthesized using a polyol method. The properties of the synthesized materials were confirmed through X-ray diffraction (XRD) and Fourier-transform infrared spectroscopy (FTIR). By modifying the arrangement of nickel nanowires in the nickel sulfide film using a Halbach array, the electron transport mobility was improved. The variation in sheet resistance was observed using a four-point probe. The arrangement of nickel nanowires was observed using optical microscopy and scanning electron microscopy(SEM). Finally, device analysis was conducted, and it was found that the counter electrode with a concentration of 0.130 mg/ml of nickel nanowire array on the nickel sulfide film achieved the highest conversion efficiency of 8.94%. This efficiency was 1.57% higher than that of the commonly used counter electrode material platinum in dye-sensitized solar cells. There is great potential to replace platinum as the electrode material in dye-sensitized solar cells, which would reduce costs and further advance the commercialization of dye-sensitized solar cells in the future.

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