臺灣博碩士論文加值系統

　　染料敏化太陽能電池相較於傳統矽半導體太陽能電池具有製程簡易、成本低廉、性能穩定、可大規模生產等優點。奈米碳管具備良好的電子傳輸、電子壽命長等特性，以及可以提供電子直接傳輸的路徑，適合作為光陽極複合材料。而石墨烯同樣也是光陽極複合材料的最佳選擇，石墨烯具有導電性高、熱穩定性高、高比表面積等優點，並且石墨烯是目前發現最小電阻率的材料。
　　本研究中透過分別添加不同濃度的多壁奈米碳管及單層石墨烯於二氧化鈦，以刮刀法製備成染料敏化太陽能電池，並探討各濃度的奈米碳管及石墨烯對染敏電池的影響。最後再將奈米碳管及石墨烯一同加入二氧化鈦中，將製備出的染敏電池進行量測與比較，分析摻雜奈米碳管、石墨烯、奈米碳管/石墨烯的染敏電池之特性。
　　研究結果表明，摻雜了奈米碳管/石墨烯的二氧化鈦複合薄膜染敏電池相較於只摻雜奈米碳管及只摻雜石墨烯的染敏電池，擁有較高的光電轉換效率，除了同時具有奈米碳管良好的電子傳輸以及石墨烯的高比表面積外，其薄膜表面具有更多的孔洞，主要原因為奈米碳管/石墨烯的三維結構導致薄膜呈現出多孔的形態，可以吸附更多的染料，使染敏電池整體效率獲得提升。

Compared with traditional silicon semiconductor solar cells, dye-sensitized solar cells (DSSCs) have the advantages of simple manufacturing process, low cost, stable performance, and scalable production. Carbon nanotubes (CNTs) have good electron transmission, long electron life and other characteristics, and can provide a path of direct electron transmission, and are suitable as photoanode composite materials. Graphene is also the best choice for photoanode composite materials. Graphene has the advantages of high conductivity, high thermal stability, and high ratio substitution. Graphene is the material with the smallest resistivity found so far.
In this study, DSSCs were prepared by adding different concentrations of CNTs and graphene to TiO2 by the doctor blade method, and the effects of CNTs and graphene of various concentrations on the DSSCs were discussed. Finally, the CNTs/graphene were added to the TiO2 together, the prepared DSSCs were measured and compared, the DSSCs that replaced CNTs, graphene, CNTs/graphene were analyzed characteristic. The research results show that the TiO2 composite thin film DSSCs that replaces CNTs/graphene has higher photoelectric conversion efficiency than DSSCs that replace only CNTs and graphene, except at the same time, it has good electron transport of CNTs and the high ratio interconnection of graphene. The film surface has more pores, so that the three-dimensional structure of CNTs/graphene leads to a porous morphology of the film. The absorption of more dyes improves the overall efficiency of the DSSCs.

摘要…i
Abstract…ii
誌謝…iii
目錄…iv
表目錄…vii
圖目錄…viii
第一章 緒論…1
1.1 前言…1
1.2 研究動機與目的…2
第二章 文獻回顧…3
2.1 染料敏化太陽能電池（Dye-sensitized solar cells, DSSCs）…3
2.1.1 發展歷史…3
2.1.2 染料敏化太陽能電池的元件結構…4
2.1.2.1 透明導電膜玻璃（Transparent Conducting Oxide, TCO）…4
2.1.2.2 對電極（Counter Electrode）…5
2.1.2.3 半導體薄膜工作電極（Working Electrode, WE）…5
2.1.2.4 染料（Dye）…6
2.1.2.5 電解液（Electrolyte）…9
2.1.3 染料敏化太陽能電池的工作原理…11
2.2 二氧化鈦之基本特性介紹（Titanium dioxide, TiO2）…13
2.3 石墨烯（Graphene）…15
2.3.1 發展歷史…15
2.3.2 特性介紹…16
2.4 奈米碳管（Carbon Nanotube, CNT）…18
2.4.1 發展歷史…18
2.4.2 特性介紹…19
第三章 實驗方法…22
3.1 實驗藥品與儀器設備…22
3.1.1 實驗藥品…22
3.1.2 實驗儀器設備…23
3.2 實驗流程…24
3.2.1 製備奈米碳管、石墨烯與二氧化鈦的複合漿料…25
3.2.1.1 奈米碳管分散處理…25
3.2.1.2 石墨烯分散處理…25
3.2.1.3 調配複合漿料…26
3.2.2 製備染料敏化太陽能電池…27
3.2.2.1 清洗透明導電玻璃基板…27
3.2.2.2 製備複合薄膜…28
3.2.2.3 調配染料與工作電極敏化…29
3.2.2.4 調配電解液…29
3.2.2.5 製備對電極…29
3.2.2.6 染料敏化太陽能電池的封裝…30
3.3 實驗儀器與特性分析…31
3.3.1 複合薄膜之製備與特性分析…31
3.3.1.1 油壓機…31
3.3.1.2 場發射掃描式電子顯微鏡分析…32
3.3.2 染料敏化太陽能電池之特性分析…33
3.3.2.1 紫外/可見光吸收光譜儀分析量測（UV-Vis）…33
3.3.2.2 電壓–電流特性量測…34
3.3.2.3 全波段入射光子轉換效率量測（IPCE）…37
3.3.2.4 電化學阻抗頻譜分析量測（EIS）…38
第四章 結果與討論…43
4.1 複合薄膜之場發射掃描式電子顯微鏡之分析…43
4.1.1 複合薄膜之壓膜薄膜分析…43
4.1.2 奈米碳管與二氧化鈦複合薄膜之表面分析…44
4.1.3 石墨烯與二氧化鈦複合薄膜之表面分析…46
4.1.4 奈米碳管/石墨烯/二氧化鈦複合薄膜之表面分析…48
4.1.5 奈米碳管/石墨烯/二氧化鈦複合薄膜之截面分析…50
4.2 染料敏化太陽能電池量測分析…52
4.2.1 摻雜不同濃度奈米碳管對染料敏化太陽能電池之特性分析…52
4.2.1.1 摻雜不同濃度奈米碳管下之J-V curve分析…52
4.2.1.2 摻雜不同濃度奈米碳管下之UV-Vis分析…53
4.2.1.3 摻雜不同濃度奈米碳管下之IPCE分析…54
4.2.1.4 摻雜不同濃度奈米碳管下之EIS分析…55
4.2.2 摻雜不同濃度石墨烯對染料敏化太陽能電池之特性分析…56
4.2.2.1 摻雜不同濃度石墨烯下之J-V curve分析…56
4.2.2.2 摻雜不同濃度石墨烯下之UV-Vis分析…57
4.2.2.3 摻雜不同濃度石墨烯下之IPCE分析…58
4.2.2.4 摻雜不同濃度石墨烯下之EIS分析…59
4.2.3 摻雜不同濃度奈米碳管/石墨烯對染料敏化太陽能電池之特性分析…60
4.2.3.1 摻雜不同濃度奈米碳管/石墨烯下之J-V curve分析…60
4.2.3.2 摻雜不同濃度奈米碳管/石墨烯下之UV-Vis分析…61
4.2.3.3 摻雜不同濃度奈米碳管/石墨烯下之IPCE分析…62
4.2.3.4 摻雜不同濃度奈米碳管/石墨烯下之EIS分析…63
4.2.4 探討奈米碳管、石墨烯、奈米碳管/石墨烯對染敏電池之影響差異…64
第五章 結論…68
參考文獻…69
Extended Abstract…73

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