本研究利用具有反應選擇性之構築單位(4-isocyanato-4’(3,3-dimethyl-2,4-dioxo-azetidino)diphenylmethane, IDD)，與1-decanol及diethylenetriamine (DETA)以收斂式重覆進行開環加成反應得到一末端具有C10長碳鏈之polyurea/malonamide 樹枝狀構築單元 (G0.5-G2.5)。爾後將含有azetidine-2,4-dione 官能基之G0.5、G1.5、G2.5與6-aminohexanoic acid 進行開環反應合成出不同代數並具有酸根錨基之樹枝狀共吸附劑 (GA6-0.5、GA6-1.5、GA6-2.5)，透過不同代數、不同濃度之樹枝狀共吸附添加於染料敏化太陽能電池中探討其光電轉換效率之差異的影響。樹枝狀共吸附劑具有龐大的樹枝狀結構，因此加入至電池可避免染料之聚集致使注入到TiO2的電子數目提升，且能抑制暗電流而提升染料敏化太陽能電池的光電轉換效率。
元件製作部分以具有雙錨基之化合物HL5於固定濃度下作為染料，並加入不同代數、不同濃度樹枝狀共吸附劑來製備染料敏化太陽能電池。結果顯示加入最佳化濃度 (0.3 mM)的 GA6-2.5的元件表現出最好的電池效率，光電轉換效率提升到6.66±0.07%，短路電流為12.88±0.11 mA cm-2，開環電壓為0.72±0.00 V，填充因子為0.72±0.00。其效率更優於以常見共吸附劑CDCA為標準品電池 (6.33%±0.04%)，且需加入共吸附劑的濃度也遠低於CDCA (3 mM)，此新型樹枝狀共吸附劑能做為新的共吸附劑使用。

A bifunctional structure, 4-isocyanato-4’(3,3-dimethyl-2,4-dioxo-azetidino)diphenylmethane (IDD) was used as a building block. Then, this building block was reacted with 1-decanol and diethylenetriamine (DETA) to obtain a series of convergent C10 alkyl chain containing polyurea/malonamide dendron (G0.5-G2.5) through addition and ring opening reaction. Afterward, G0.5, G1.5 and G2.5 consisting of azetidine-2,4-dione functional group were selected and reacted with 6-aminohexanoic to generate the corresponding acid anchor containing dendritic co-absorbents (GA6-0.5、GA6-1.5、GA6-2.5). Cell performance was investigated by using different generation and concentration of dendritic co-absorbents. Due to the 3D dendritic co-adsorbent structures, it can prevents the dye aggregation resulting more efficient electron injection characteristics. In addition, the long alkyl chain located at the peripheral can be suppressed the dark current behavior.
Dye-sensitized solar cells (DSSCs) were fabricated using phenothiazine-based double anchors dye (HL5) as sensitizer combined with different generations and concentration of dendrons as co-adsorbents. Upon addition of 0.3 mM of GA6-2.5 co-adsorbent, the best efficiency was 6.66±0.07%, with a current density (Jsc) of 12.88±0.11 mA cm-2, an open circuit voltage (Voc) of 0.72±0.00 V and a fill factor of 0.72±0.00. The cell is superior to standard CDCA co-adsorbent device (PCE = 6.33±0.04%) and the amount of co-adsorbents is less than CDCA (3 mM), this novel dendritic co-adsorbents can be as a novel co-adsorbents.

摘要 I
Abstract III
致謝 V
目錄 VI
表目錄 IX
圖目錄 X
第一章 緒論 1
1-1 前言 1
第二章 文獻回顧與研究動機 2
2-1 太陽能電池介紹 2
2-1-1 矽晶類太陽能電池 3
2-1-2 化合物型太陽能電池 3
2-1-3 新世代太陽能電池 4
2-2 染料敏化太陽能電池之結構 6
2-2-1 透明導電玻璃 6
2-2-2 多孔奈米半導體薄膜電極 6
2-2-3 染料 7
2-2-4 電解質溶液 9
2-2-5 對電極 9
2-3 染料敏化太陽能電池之工作機制 11
2-4 太陽能電池之參數介紹 13
2-5 吸附層添加劑之簡介 15
2-5-1 共敏化 15
2-5-2 共吸附劑 18
2-6 規則樹枝狀高分子簡介 21
2-6-1 樹枝狀高分子之合成方式 22
2-7 樹枝狀共吸附劑 24
2-8 高反應性之isocyanate官能基之介紹 26
2-9 Azetidine-2,4-dione之介紹與其反應選擇性 28
2-10 反應選擇性構築單位IDD及其樹枝狀結構之介紹 31
2-11 研究動機 34
第三章 實驗方法 35
3.1 實驗流程 35
3.2 儀器設備 36
3.3 實驗藥品 40
3.4 有機溶劑 44
3.5 實驗部分 46
3.5.1 IDD之合成[41] 46
3.5.2 末端含疏水基團之規則樹枝狀構築單元高分子(G0.5-G2.5)之合成[44] 47
3.5.3末端含疏水基團之樹枝狀共吸附劑 (GA6-0.5-GA62.5)之合成 50
3-6 電池元件之製備 52
第四章 結果與討論 53
4-1 IDD之製備和鑑定 53
4-2 末端含疏水基團之規則樹枝狀高分子 (G0.5-G2.5)之製備和鑑定 55
4-3 樹枝狀共吸附劑 (GA6-0.5-GA6-2.5)之製備和鑑定 66
4-3-1 樹枝狀共吸附劑之溶解度分析 73
4-3-2 樹枝狀共吸附劑之熱性質分析 74
4-4 元件性能討論 78
第五章 結論與建議 84
第六章 參考文獻 85
附錄 A 90

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