本篇論文研究於PEDOT:PSS 中加入不同濃度的Glycerol 或Ethylene glycol 作為添加物，並對於改質後PEDOT:PSS 的光性、物性與電性進行探討。我們觀察到吸收光譜和HOMO 值並未隨著添加物加入前後與加入濃度不同而有所改變；而在PEDOT:PSS 中加入適當濃度的添加物，會使導電度有提升的現象；最後表面成膜粗糙度會隨著添加物的濃度增加而增加，使得旋轉塗佈方式容易有成膜不均的現象。
最後將改質後的PEDOT:PSS 作為陽極緩衝層，應用於有機高分子太陽能電池元件上，其元件結構為ITO/PEDOT:PSS(加入不同濃度的Glycerol 或Ethylene glycol)/P3HT:PCBM/Al 所組成，以AM1.5G 100mW/cm2 的模擬太陽光源下量測元件量測參數。當PEDOT:PSS 加入適當濃度的添加物應用於有機高分子太陽能電池，功率轉換效率可從2%提升至3%，大幅地提升50%。探討其改善原因為加入添加物使得導電度增加，造成短路電流增加，最後提升整體有機高分子太陽能電池元件的功率轉換效率。

We investigated the different percentage of glycerol or ethylene glycol doped into PEDOT:PSS as anode buffer layer in OSC. The electrical, optical and physical properties of PEDOT:PSS were measured before and after adding glycerol or ethylene glycol. Their optical transparency was almost the same by UV-Vis spectrophotometer. Their HOMO value, measured by PESA, was around 5.1eV. Modified PEDOT:PSS with proper concentration addition increased its conductivity. Finally, surface roughness of PEDOT:PSS layer increased with higher concentration of addition resulted in bad film-forming from spin coating process.
We fabricated polymer solar cells with modified PEDOT:PSS as anode buffer layer. The devise was consisted of ITO/PEDOT:PSS (different doping concentration of glycerol or ethylene glycol ) /P3HT:PCBM /Al and measured device parameter of solar cell with sunlight simulation of AM1.5G 100mW/cm2 . We found that improvement of power conversion efficiency of polymer solar cell from 2% to 3% and short-circuit current was improved for 32%, with modified PEDOT:PSS as anode buffer layer.
We suggested that the improved short-circuit current was originated from increased conductivity of PEDOT:PSS that was modified by glycerol or ethylene glycol. Finally power conversion efficiency of polymer solar cell was increased with modified.

誌 謝.................................................... I
中文摘要................................................ II
Abstract ............................................... III
目 錄.................................................... V
圖目錄................................................... X
表目錄................................................ XIII
第一章 緒論.............................................. 1
1-1 有機太陽能電池簡介............................... 1
1-2 有機太陽能電池結構演進........................... 5
1-2-1 單層結構................................... 5
1-2-2 雙層異質界面結構........................... 6
1-2-3 混合層異質界面結構......................... 7
1-2-4 接合層異質界面結構......................... 7
1-3 陽極緩衝層PEDOT:PSS 簡介........................ 12
1-4 研究動機........................................ 14
第二章 基本理論......................................... 16
2-1 光電轉換原理.................................... 16
2-2 太陽光模擬...................................... 21
2-3 太陽電池等效電路................................ 27
2-4 光電特性參數.................................... 30
2-4-1 短路電流(Isc) ............................. 30
2-4-2 開路電壓(Voc) ............................. 31
2-4-3 填充因子(F.F.) ............................ 32
2-4-4 功率轉換效率(ηP) .......................... 33
第三章 實驗細節......................................... 35
3-1 實驗流程........................................ 35
3-2 實驗藥品........................................ 36
3-2-1 ITO ....................................... 36
3-2-2 PEDOT:PSS ................................. 36
3-2-3 P3HT ...................................... 36
3-2-4 PCBM ...................................... 36
3-2-5 Glycerol .................................. 36
3-2-6 Ethylene glycol ........................... 37
3-2-7 Xylene .................................... 37
3-3 實驗步驟........................................ 40
3-3-1 配藥流程.................................. 40
1. PEDOT:PSS 材料： ............................. 40
2. P3HT/PCBM 材料： ............................. 40
3-3-2 探討改質後PEDOT:PSS 之光性、物性和電性.... 41
3-3-3 有機高分子太陽能電池元件製程.............. 42
3-4 量測儀器與方法.................................. 45
3-4-1 紫外光/可見光光譜儀(UV-Vis) ............... 45
3-4-2 光電子光譜分析儀(PESA) .................... 46
3-4-3 電阻量測法................................ 47
3-4-4 原子力顯微鏡(AFM) ......................... 48
3-4-5 太陽光譜模擬量測系統(Solar simulator system)
................................................ 50
3-4-6 表面輪廓儀(Surface profiler) .............. 51
3-5 製程儀器........................................ 58
3-5-1 超音波清洗機(Ultrasonic cleaning) ......... 58
3-5-2 磁式旋轉加熱盤(Hot plate) ................. 58
3-5-3 旋轉塗佈機(Spin coator) ................... 58
3-5-4 紫外光曝光機(UV exposure) ................. 58
3-5-5 電漿清洗機(O2-plasma) ..................... 58
3-5-6 手套箱(Glove box) ......................... 59
3-5-7 蒸鍍機(Evaporator) ........................ 59
第四章 結果與討論....................................... 60
4-1 利用UV-Vis 量測吸收光譜結果..................... 60
4-1-1 不同濃度G-PEDOT 的量測結果................ 61
4-1-2 不同濃度E-PEDOT 的量測結果................ 61
4-2 利用PESA 量測HOMO 值............................ 63
4-2-1 不同濃度G-PEDOT 的結果.................... 63
4-2-2 不同濃度E-PEDOT 的結果.................... 64
4-3 利用電阻量測法量測導電度........................ 65
4-3-1 不同濃度G-PEDOT 的結果.................... 66
4-3-2 不同濃度E-PEDOT 的結果.................... 66
4-4-3 比較G-PEDOT 與E-PEDOT 的結果差異.......... 67
4-4 利用AFM 量測表面成膜粗糙度...................... 70
4-4-1 不同濃度G-PEDOT 的結果.................... 70
4-4-2 不同濃度E-PEDOT 的結果.................... 71
4-4-3 比較G-PEDOT 與E-PEDOT 的結果差異.......... 71
4-5 製作有機高分子太陽能電池量測元件量測參數........ 80
4-5-1 不同濃度G-PEDOT 的結果.................... 81
4-5-2 不同濃度E-PEDOT 的結果.................... 83
4-5-3 比較G-PEDOT 與E-PEDOT 的結果差異.......... 85
4-6 實驗結果討論.................................... 93
第五章 總結與未來工作................................... 96
5-1 總結............................................ 96
5-2 未來工作........................................ 98
參考文獻................................................99

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