有機薄膜太陽能電池材料Poly(3-hexylthiophene): methanofullerene (P3HT:PCBM)奈米尺度下結構相位之間的雙連續(bicontinuous)特性，使得電荷分離及載子傳輸的能力提高。因此瞭解兩物質異質介面之間的電性結構對提升太陽能電池材料效率將有很大的幫助。本研究藉由剖面式掃描穿隧顯微鏡來直接觀察及量測有機薄膜P3HT以及PCBM介面之間的結構、原子解析度的電子特性分析。對太陽能電池材料P3HT以及PCBM在有機薄膜內部的幾何結構分布情形也將在這篇論文詳細討論及瞭解。

The electronic structures at the hetero interface of Poly(3-hexylthiophene): methanofullerene (P3HT:PCBM) have a great improvement on the solar cell efficiency due to the formation of bicontinuous nanoscaled phase separation which will enhance charge separation and carrier transport. In the present work, cross-sectional scanning tunneling microscopy and scanning tunneling spectroscopy measurements are utilized to obtain the in-situ atomic-scale band structure across the interface between P3HT and PCBM directly. The distribution of PCBM volume concentration of organic films was also analyzed and discussed in the work.

目錄
摘要...........................................................................................i
Abstract...................................................................................ii
致謝.........................................................................................iii
目錄.........................................................................................iv
圖目錄.....................................................................................vi

第一章 緒論
1-1 簡介..................................................................................1
1-1-1 有機薄膜太陽能電池在製程上的優點......................1
1-1-2 P3HT及PCBM在有機薄膜內的幾何結構垂直分佈2
1-1-3 P3HT及PCBM介面的電子能帶結構........................2
1-2 研究動機.........................................................................3
第二章 實驗原理...................................................................4
2-1量子穿隧效應..................................................................4
2-2 區域能態密度(Local density of state，LDOS).........7
2-3 STM的掃描模式.............................................................8
第三章 實驗儀器與步驟.....................................................13
3-1 儀器介紹.......................................................................13
3-2 超高真空系統...............................................................13
第四章 實驗結果與討論.....................................................15
4-1 樣品資訊.......................................................................15
4-2 形貌結構.......................................................................15
4-3 電性結構.......................................................................17
4-4 能帶結構.......................................................................21
第五章 結論.........................................................................24
參考文獻..............................................................................25

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