臺灣博碩士論文加值系統

本研究探討有主動層材料pentacene成長在具微米溝槽結構之電洞傳輸層PEDOT:PSS 薄膜上之異質結構有機太陽能電池元件電特性，選用的p型材料為pentacene，n 型材料為PTCDI-C5H11，其目的是增加可見光區的吸收與p-n的界面，此種結構將有助於提升其光電轉換效率。利用原子力顯微鏡(AFM)觀察pentacene 分子和pentacene / PTCDI-C5H11分子成長在未壓印處理與壓印處理之PEDOT:PSS 薄膜上之表面型態差異性，證實對PEDOT:PSS 薄膜進行壓印處理能夠增加主動層之間接觸面積。最後，使用偏振吸收光譜討論pentacene 薄膜之吸收強度，比較出pentacene 分子成長在壓印處理與未壓印處理兩種不同PEDOT:PSS 薄膜上其薄膜結構上的差異性，未壓印元件之開路電壓Voc、短路電流Jsc、填充因子F.F.與轉換效率η分別為0.334 V、-3.250 mA/cm2、0.441與0.480 %，壓印元件之開路電壓Voc、短路電流Jsc、填充因子F.F.與轉換效率η分別為0.352 V、-9.5 mA/cm2、0.350與1.167 %；以具壓印及未壓印之PEDOT:PSS兩者相互觀察比較，光電轉換效率可提升3倍。其Jsc值9.5 mA/cm2是目前同款元件中比已發表論文最高值8.5 mA/cm2還高，明確的顯示壓印處理的微米溝槽可有效的提升其效率。

We studied the bi-layer structure organic solar cells (pentacene is donor ,and PTCDI-C5H11 is acceptor ).Pentacene film was deposited on a hole transport layer PEDOT:PSS with periodic micro grove structure.

Based on this structure, we obtained about three times of energy conversion efficiency η= 1.16 % compare to a planar bi-layer structure η=0.35 %.This effect is due to the increase of interface area of pentacene/PEDOT:PSS and pentacene/ PTCDI-C5H11 that can help the hole transportation and exciton separation respectively. The short circuit current Jsc ~9.5 mA/cm2 ,we obtained is higher than other published data (Jsc=8.5 mA/cm2).We also applied UV-visible absorption spectrum , X-Ray diffraction , atomic force microscopy to investigate the organic films and solar cell devices.

摘要………………………………………………………………………I
Abstract…………………………………………………………………..II
誌謝……………………………………………………………………..III
目次……………………………………………………………………..IV
表目錄………………………………………………………………….VII
圖目錄………………………………………………………………...VIII
第一章 太陽能電池簡介………………………………………………..1
1.1 前言…………………………………………………………….1
1.2 太陽能電池種類……………………………………………….2
1.3 有機太陽能電池研究發展概要……………………………….3
1.3.1 前言……………………………………………………..3
1.3.2 有機小分子太陽能電池研究發展概要………………..4
1.3.3 有機高分子太陽能電池研究發展概要………………..6
第二章 有機太陽能電池之工作原理…………………………………10
　　2.1 有機太陽能電池原理………………………………………...10
2.2 太陽能電池等效電路原理…………………………………...11
2.3 空氣質量……………………………………………………...12
2.4 太陽能電池各項參數介紹…………………………………...12
第三章 有機太陽能電池製程內容與實驗步驟………………………19
3.1 物理氣相沉積原理…………………………………………...19
3.2 實驗材料……………………………………………………...19
3.3 元件製作流程………………………………………………...20
3.3.1利用微影蝕刻方式製作元件陽電極流程...................20
3.3.2 試片清洗步驟………………………………………..21
3.3.3 塗佈PEDOT:PSS薄膜與壓印PEDOT:PSS薄膜…...21
3.3.4 蒸鍍元件之主動層…………………………………..21
3.3.5蒸鍍元件之陰電極……………………………………22
3.4 元件量測系統………………………………………………...22
3.5 實驗儀器簡介………………………………………………...23
3.5.1 紫外光-可見光分光光度計…………………………...23
3.5.2 X-ray 繞射光譜儀……………………………………..23
3.5.3 原子力顯微鏡…………………………………………23
第四章 實驗結果與討論………………………………………………32
4.1 研究動機……………………………………………………...32
4.2 太陽能電池元件電特性……………………………………...33
4.3 原子力顯微鏡(AFM)表面型態分析…………………………34
4.4 X射線繞射光譜……………………………………………….36
4.5 紫外光-可見光吸收光譜……………………………………..38
4.6 綜合討論……………………………………………………...40
第五章 未來與展望……………………………………………………60
參考文獻………………………………………………………………..62

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