染料敏化太陽能電池之新型敏化劑

Novel sensitizers for dye-sensitized solar cells

賴慶周(Cing-Jhou Lai)

指導教授 ： 趙豫州

國立臺北科技大學/工程學院/有機高分子研究所/碩士(2010年)

摘要

由於近年來石油價不斷攀向高峰，而存量有限的石油終有耗盡之時，因此找尋乾淨的替代能源，為十分重要的一項議題，因此太陽能、風力、水力等乾淨的替代能源更顯重要，其中以太陽能的研究最為熱門，於諸多太陽能研究領域中以低成本，簡易製造的染料敏化太陽能電池最為有淺力應用於日常生活用品，目前廣泛應用於染料敏化太陽能電池之敏化劑，大多為釕金屬之錯化合物，但由於釕金屬為貴重金屬，使其敏化劑仍需一定的成本，加上其為重金屬，仍有汙染上的問題，故本論文所開發之有機染料，可使敏化劑之成本大幅降低，並免除重金屬污染的問題。
本論文所設計的有機染料以三苯胺為主體，分別於側端再加上一三苯胺分子，使原本的三苯胺吸光範圍增大，產生紅位移現象，並提高其吸光係數，藉此幫助捕獲更多的光子，由於三苯胺間串接型式是以共軛連接，對於電子的傳遞效果有相當的幫助，就整體結構而言，三苯胺間的諸多的苯環會使其生成不共平面的特性，如此可以降低染料分子間層層堆疊的團聚現象，不但使染料上的羧酸基更容易與TiO2產生鍵結，而且可以避免分子間之Quenching現象，使得所製備之電池光電效率得以大幅提升。

關鍵字

染料敏化太陽能電池

並列摘要

In this thesis, we design one kind of novel organic dye. Triphenylamine is the dye’s major part, and we add two more of triphenylamine on each side to help the major triphenylamine to increase it’s absorption band, to result red shift effect, also increase it’s molar extinction coefficient to help capture more photon. Because of triphenylamine molecular connected by conjugation, it’s good for electron transfer. Overall, between triphenylamine has so many benzene, result in the non-coplanar property. It not only helps reduce the dye intermolecular aggregation effect, but also helps carbonyl group combine with TiO2.It can also to avoid intermolecular “Quenching phenomenon”, makes the efficiency of solar cell got significantly improve.

並列關鍵字

DSSC ； Triphenylamine

參考文獻

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