紫質敏化染料分子（porphyrin-based dye）具有很強的莫耳吸光係數（molar absorption coefficients），對染料敏化太陽能電池（Dye-Sensitized Solar Cells，DSSCs）元件之光電流有很大助益。然而紫質染料在浸泡吸附過程中，可能出現分子聚集（aggregation）現象，因而降低元件表現。因此其製程中，必須採取適當之浸泡吸附方法。
本研究採用吸收光譜涵蓋近紅外（near-IR）波段之紫質敏化染料（LWP系列），著重研究浸泡染料／清洗之吸附程序，以改善分子聚集現象、優化元件表現，並比較LWP系列各染料元件之效率。另一方面，以不同紫質染料分子作共敏化吸附（co-sensitized），進一步增進元件表現。輔以阻抗特性之探討，確認不同浸泡吸附程序之優化效果。

Due to their large molar absorption coefficients, porphyrin-based dyes provide great improvement to the photocurrents of Dye-Sensitized Solar Cells (DSSCs). However, dye aggregation might lower the performance of devices. Therefore, suitable dye soaking conditions are essential.
In this study, a series of porphyrin-based dyes (LWP series) with absorption spectra covering near-IR regions were used in the fabrication of DSSCs. Different dye soaking/washing processes were adopted to lessen dye aggregation and thus to optimize performance of devices. The device performances of DSSCs using porphyrin dyes were further enhanced with co-sensitization. All devices were also characterized by impedance spectroscopy to study effects of dye soaking processes.

國立台灣大學碩士學位論文口試委員會審訂書 i
誌謝 ii
摘要 iii
Abstract iv
目次 v
圖目次 vii
表目次 xi
第1章 緒論 1
1.1 太陽能電池之發展現況與應用 1
1.2 染料敏化太陽能電池之簡介 2
1.3 紫質染料應用於染料敏化太陽能電池之研究與發展 3
1.4 論文動機與架構 3
第1章圖表 5
第2章 實驗方法 7
2.1 本研究使用之紫質染料分子結構及其特性 7
2.2 染料敏化太陽能電池元件之製作及組裝 8
2.2.1 奈米多孔隙二氧化鈦薄膜之製備 8
2.2.2 敏化染料之溶液吸附 9
2.2.3 催化電極之製備 11
2.2.4 電解液之製備 11
2.2.5 元件組合及封裝 11
2.3 樣品及元件之量測分析 11
2.3.1 吸附染料之二氧化鈦電極之吸收光譜 12
2.3.2 電流密度－電壓特性之量測 12
2.3.3 光電流轉換效率頻譜之量測 13
2.3.4 電化學阻抗頻譜之量測 13
第2章圖表 16
第3章 結果與討論 23
3.1 元件結果與討論 23
3.2 元件阻抗特性之結果討論 29
第3章圖表 34
第4章 總結與未來展望 90
4.1 總結 90
4.2 未來展望 90
參考文獻 91

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