臺灣博碩士論文加值系統

在有機太陽能科技領域裡，有著材料穩定性及元件效率兩大問題，藉由有機太陽能電池效率之基礎分析，我們可以大膽推測吸光效率及電荷載子的傳遞問題為影響元件效能的主要因素。因此本研究之重點在以電子施體咔唑搭配不同低能隙材料為電子受體，利用Suzuki Coupling聚合出新穎導電高分子，使其結構融合成D-A type的高分子形式，希望如此一來，能在高分子鏈上形成強而有力的分子間電荷傳遞作用(ICT)，我們已成功合成出兩種新穎施體-受體共聚低能隙高分子，PCAMDT與PCAMDP他們在熱性質上展現了不錯的熱穩定性，熱裂解溫度(Td)分別為320℃和335℃。根據UV-Vis吸收光譜，PCAMDT和PCAMDP的光學分子能隙為1.85 eV和2.22eV。經由電化學分析的結果，PCAMDT的HOMO能階位於-5.69eV，LUMO能階位於-3.77eV，而PCAMDP的HOMO能階位於-5.87eV，LUMO能階位於-3.75eV，這些良好的特性使得低能隙高分子具備了應用在太陽能電池上所需之條件。

In the field of organic solar technology, there are two main problems, the stability of materials and the low power efficiency. By analyzing the power efficiency of organic solar cells, we can infer that efficiency of absorption and charge mobility are the key factors to these two problems.
In this study, we focus on coupling carbazole with different low bandgap moieties. By using Suzuki Coupling, we synthesized new conjugated polymers with main chain structures of D-A sequence. It turns out that the copolymer can form a strong intramolecular charge transfer (ICT). We’ve successfully synthesized two new low bandgap copolymers with D-A sequence, PCAMDT and PCAMDP.
These two copolymers show us excellent thermal stabilities with
decomposition temperature of 320℃and 355℃,respectively.According to
UV-Vis absorption spectrum, PCAMDT and PCAMDP own bandgaps at
1.85 eV and 2.22eV,respectively. Electrochemical analysis reveals that
the HOMO and LUMO level of PCAMDT are found to be -5.69eV and
-3.77eV,repectively, while the HOMO and LUMO level of
PCAMDP are -5.87eV and -3.75eV. These properties make PCAMDT
and PCAMDP advantageous materials while applied as high absorbing
layers of organic solar cells.

目錄
誌謝 i
目錄 iii
圖目錄 vi
中文摘要 ix
第一章 緒論 1
1.1 前言 1
1.2 太陽能電池 3
1.2.2有機太陽能電池 7
第二章 原理 13
2.1共軛高分子 13
2.2 能帶結構 15
2.3導電原理 17
2.4 低能隙簡介 18
2.4.1 低能隙導電高分子的種類 19
2.5 聚噻吩系統 22
2.5.1 聚噻吩高分子能隙的調變 22
2.5.2 聚噻吩低能隙導電高分子的種類 23
2.5.3 聚噻吩高分子的推拉效應 25
2.6 太陽能電池的轉移機制 27
2.6.1 太陽能電池的光電轉換原理 28
2.6.2 太陽能電池的功率轉換效率 32
2.7 低能隙高分子應用於有機太陽能電池 35
2.8 高效率低能隙導電高分子 36
2.9 研究目的 39
第三章　實驗部分 42
3.1實驗器材 42
3.1.1 熱重分析儀TGA(Thermo Gravimetric Analyzer)42
3.1.2熱示差掃描卡量計DSC 44
3.1.3 紫外光與可見光光譜儀(UV-Vis spectrometer)46
3.1.4 螢光光譜儀(Fluorescence spectrometer) 48
3.1.5循環伏特安培計(Cyclic Voltammetry，CV) 51
3.2 實驗步驟 52
3.2.1 單體合成流程圖 52
3.2.2 單體CA合成步驟 54
3.2.3 單體MDT合成步驟 58
3.2.4 高分子PCAMDT聚合 60
3.2.5 單體MDP單體合成步驟 61
3.2.6高分子PCAMDP聚合 63
第四章 結果與討論 64
4.1 GPC量測 64
4.2 TGA測量 65
4.3 熱示差掃描卡量計(DSC) 67
4.4 溶解度測試 68
4.5 紫外光/可見光吸收光譜儀 (UV-Vis Spectrometer)69
4.6 螢光光譜儀 (PL Spectrometer) 77
4.7電化學性質—氧化還原電位測量 79
第五章 結論 83
第六章 參考資料 84

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