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研究生： 葉沛宏
Yeh, Pei-Hung
論文名稱： 有機奈米層/鋁電極結構於高效率高分子太陽能電池之研究
The study of highly efficient Polymer Solar Cell applying organic nano-layer/Al electrode
指導教授： 郭宗枋
Guo, Tzung-Fang
學位類別： 碩士
Master
系所名稱： 理學院 - 光電科學與工程研究所
Institute of Electro-Optical Science and Engineering
論文出版年： 2007
畢業學年度： 95
語文別： 中文
論文頁數： 104
中文關鍵詞： 高分子太陽能電池 、電極
外文關鍵詞： electrode, polymer solar cell
相關次數： 點閱：43  下載：1 
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    • 於本篇論文之研究，我們將Polyethylene oxide (PEO)/ Al電極利用真空熱蒸鍍的方式蒸鍍在以poly(3-hexylthiophene) (P3HT)和C60之衍生物[6,6]-phenyl-C61-butyric acid methyl ester (PCBM)以1：1重量比混合所組成之有機高分子太陽能電池的主動層上。實驗結果顯示相較於未使用PEO只利用Al當作電極的元件，於AM 1.5G、100 mW/cm2模擬太陽光下，其轉換效率值約2.5%；而加入PEO之元件其短路電流值大幅增加，進而提升轉換效率至5%以上。此轉換效率值也比使用Ca/ Al為陰極材料的元件，其最高轉換效能約4%-4.5%，還要來得大。經由X-ray Photo-electron Spectroscopy (XPS)測量發現PEO與Al會有鍵結的作用產生，而且隨著鍵結程度之改變而增加電流值的大小。我們推測加入PEO奈米薄膜層改變了鋁電極和感光層間之表面形貌以及電子傳輸性質，降低了電子傳遞至鋁電極之能障。本研究並針對效率提升之原因做探討，包括PEO奈米薄膜層對元件之串聯電阻、短路電流、開路電壓以及填充因子的影響，希望能提供一個有效方法提升有機共軛高分子太陽能電池之光電轉換效率。

    In this work, polymer bulk-heterojunction solar cells were fabricated by thermally evaporating polyethylene oxide (PEO)/ Al electrode onto the blend film of poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester. From J-V characteristics of devices under AM1.5G simulated solar illumination (100 mW/cm2), the devices PEO/Al and Al electrode show 5% and 2.5% power conversion efficiency (PCE), respectively. The PCE of the devices PEO/Al electrode, exhibits increased short circuit current density, which is better than that of Ca/Al electrode. The bonding reactions between PEO and Al, was revealed by X-ray Photo-electron Spectroscopy. Therefore, the improved PCE of polymer solar cell is attributed to the interfacial modification of the PEO buffer layer, which results in the lower energy barrier for electron to transport between active-layer and electrode.

    中文摘要......................................................................... I 英文摘要........................................................................ II 誌謝............................................................................... III 目錄............................................................................... IV 表目錄......................................................................... VII 圖目錄........................................................................ VIII 第一章 緒論................................................................ 1 1-1 前言.................................................................... 1 1-2 有機太陽能電池簡介........................................... 5 1-3 研究動機與大綱................................................. 11 1-3-1 研究動機.................................................... 11 1-3-2 大綱.......................................................... 12 第二章 太陽能電池工作原理................................... 13 2-1 太陽光譜........................................................... 13 2-2 有機太陽能電池工作原理及光電特性................. 15 2-2-1 無機太陽能電池之光電特性............................. 15 2-2-2 有機太陽能電池之工作原理............................. 19 2-2-3 有機太陽能電池之光電特性............................. 22 2-3 結論................................................................... 23 第三章 實驗方法與步驟........................................... 24 3-1 實驗方法簡述..................................................... 24 3-2 實驗步驟............................................................ 25 3-2-1 ITO玻璃基板處理......................................... 25 3-2-2 電洞傳輸層.................................................. 29 3-2-3 主動層成膜方法........................................... 30 3-2-4 電子收集極製作........................................... 32 3-2-5 太陽能電池特性量測..................................... 34 第四章 高效率有機太陽能電池製作及特性探討... 37 4-1 前言................................................................... 37 4-2 有機太陽能電池特性分析與最佳化..................... 39 4-2-1 主動層濃度之影響........................................ 39 4-2-2 成膜轉速..................................................... 43 4-2-3 金屬電極之選擇........................................... 46 4-2-4 主動層摻混材料純度之影響............................ 50 4-2-5 主動層形貌.................................................. 54 4-3 結論................................................................... 61 第五章 有機奈米薄膜層於有機太陽能電池陰極結構之研究........................................................... 62 5-1 前言................................................................... 62 5-2 有機太陽能電池電極結構之改善........................ 65 5-2-1 電極結構之改善........................................... 65 5-2-2 電性分析與探討........................................... 67 5-3 有機奈米薄膜層之分析與討論............................ 73 5-3-1 有機奈米薄膜層之厚度影響............................ 73 5-3-2 有機奈米薄膜層之研究探討............................ 78 5-2 結論................................................................... 93 第六章 總結與未來展望........................................... 94 參考文獻....................................................................... 96 自述............................................................................. 104

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