Photovoltaic Investigations of Dye-Sensitized Solar Cells (DSSC) Based on Organic and Porphyrin Sensitizers

[[abstract]]論文摘要 我們設計出一系列以 anthracene 分子為主體結構的有機分子染料 AN-1~ AN-8，AN-1~AN-8 系列有機分子染料在推電子基與錨定基團之間以碳-碳參鍵的鍵結方式與 anthracene 分子連接，同時在結構上也會修飾上長烷鏈增加染料的溶解度；另外在錨定基 benzoic acid 的苯環接上拉電子性質或高陰電性之取代基，希望對分子內的電子轉移有所幫助。AN-1~AN-8 之染料敏化太陽能電池元件光電性質量測結果顯示，AN-1~AN-8 元件光電總轉換效率之趨勢為 AN-3 (5.90%) > AN-4 (5.65%) > AN-1 (5.36%) > AN-2 (4.94%) 以及 AN-5 (5.78%) > AN-6 (5.61) > AN-8 (5.59%) > AN-7 (1.44%) 。 在 2011 年我們實驗室發表了一系列的紫質染料 LD11~LD14，其中 LD14 光電轉換效率在交通大學應用化學系刁維光教授實驗室中以自製的 TiO2 漿料製成 DSSC，其效能測得高達 10.17%。在此，我們想在本實驗室中以商業化漿料，將 LD14 進行元件最佳化工程，看看在這樣子的元件中，是否也能有高效能的表現。[[abstract]]Abstract We designed and synthesized a series of anthracene-baesd organic sensitizers, AN-1~AN-8, for dye-sensitized solar cells. Among these sensitizers, electron-donating groups and anchoring groups were modified on the anthracene molecule through C-C triple bonds. Meanwhile, the dye structure will be modified with long alkyl chains to increase the solubility. Moreover, the anchoring groups with different electron-withdrawing substituents were used to enhance the intramolecular electron transfer. The results of the power conversion efficiency measurement of AN-1~AN-8 dye-sensitized solar cells showed the trend of AN-3 (5.90%) > AN-4 (5.65%) > AN-1 (5.36%) > AN-2 (4.94%) and AN-5 (5.78%) > AN-6(5.61) > AN-8 (5.59%) > AN-7 (1.44%). In 2011, we published a series of porphyrins dye LD11~LD14. LD14 has attained power conversion efficiency η = 10.17% via collaboration with Prof. Eric Diau’s laboratory with tailor made TiO2. In this work, we aim to achieve high efficiency of the LD14 cells in our laboratory with commercially available materials.[[note]]碩