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研究生:謝旻達
研究生(外文):Min-da Hsieh
論文名稱:以圖案化白金-氧化鎢與染料敏化二氧化鈦電極製作光電致變色電池之研究
論文名稱(外文):Fabrication of photoelectrochromic cells using patterned Pt/WO3 and dye-sensitized TiO2 electrodes
指導教授:吳季珍
指導教授(外文):Ji-Jen Wu
學位類別:碩士
校院名稱:國立成功大學
系所名稱:化學工程學系碩博士班
學門:工程學門
學類:化學工程學類
論文種類:學術論文
論文出版年:2008
畢業學年度:96
語文別:中文
論文頁數:102
中文關鍵詞:染料敏化太陽能電池氧化鎢光電致變色電池
外文關鍵詞:Tungsten oxidephotoelectrochromic cellsDSSCs
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本研究以N719染料敏化二氧化鈦多孔性奈米薄膜及圖案化氧化鎢奈米薄膜分別作為光電極與變色電極來製備光電致變色電池。並進一步研究各圖案化氧化鎢變色電極,如WO3,FTO/WO3,Pt/FTO/WO3,Pt/WO3電極等,對於電池著褪色之影響。相較於無Pt圖案化之電池, Pt圖案化之光電致變色電池具有最佳之著褪色效果。此Pt/WO3圖案化光電致變色電池於短路下利用照光與置於暗處來控制其著褪色之響應時間分別為40秒與220秒。此外,Pt/WO3圖案化光電致變色電池,於光照下可直接藉由短路及開路來控制著褪色,而著色及褪色響應時間分別為5及5秒 。將WO3/Pt圖案化光電致變色電池於光照下,藉由短路及開路,重覆做200次著褪色之測試後,穿透度並無明顯之改變,顯示此光電致變色電池具有良好的穩定性。本研究亦將Pt/WO3圖案化光電致變色電池串聯一可變電阻,於照光下短路著色時,藉由調變電阻值可改變電池著程度
Novel photoelectrochromic(PEC) cells have been fabricated using N719-sensitized TiO2 and patterned WO3 nanoparticle(NP) films. The effects of the patterned WO3 NP films, including pure WO3, FTO/WO3, Pt/FTO/WO3 and Pt/WO3 NP films, on the performances of PEC cells were investigated in this study. Among them, the cell fabricated using the Pt/WO3 patterned NP film possesses the superior performance. The response times for coloring and bleaching the cell under illumination and dark are 40 and 220 s, respectively. In addition, it was found that coloring and bleaching the cell are able to be achieved by short-circuited and open-circuited the cell, respectively, under illumination as well. The response times are even faster, which are 5 and 5 s, respectively. Long term stability of the Pt/WO3 patterned PEC cells was test by 200 cycles of coloring and bleaching. The cell demonstrates a very good stability. Finally, the transmittance of the colored PEC cell is variable by adjusting the variable resistance in series with the PEC cell.
中文摘要 ................................................. 1
英文摘要 ................................................. 1
目錄 ..................................................... 1
表目錄 ................................................... 1
圖目錄 ................................................... 1
第一章 緒論...........................................1
1-1前言...............................................1
1-2 太陽能電池發展現況................................5
1-3 光電致變色電池之結構、工作原理與研究發展..........7
1-4 研究動機與目的....................................9
第二章 文獻回顧.......................................11
2-1 電致變色系統介紹..................................11
2-1-1 電致變色之簡介..................................11
2-1-2 電致變色技術之研究發展史........................11
2-1-3 電致變色材料之應用..............................11
2-1-4 電致變色元件之種類..............................13
2-1-5 電致變色材料....................................17
2-1-6 電致變色材料之性能要求..........................19
2-2 奈米材料簡介......................................19
2-3 三氧化鎢..........................................20
2-3-1 氧化鎢簡介......................................20
2-3-2 氧化鎢之結構及其製備方式........................22
2-4 氧化鎢的電致變色機制..............................24
2-4-1 非結晶氧化鎢的電致變色機制......................24
2-4-2 結晶氧化鎢的電致變色機制........................25
2-5 染料敏化太陽能電池與光電致變色電池之工作原理......27
2-5-1 染料敏化太陽能電池之工作原理....................27
2-5-2 光電致變色電池之工作原理........................29
2-5-3 光電致變色電池於不同組裝之優缺點................30
第三章 實驗步驟與研究方法.............................34
3-1 實驗材料..........................................34
3-1-1 實驗藥品及材料..................................34
3-1-2 基板材料........................................34
3-2 實驗儀器設備......................................35
3-3 實驗設計流程......................................39
3-4 實驗步驟..........................................40
3-4-1 基板清潔........................................40
3-4-2 二氧化鈦多孔性奈米薄膜..........................41
3-4-3 氧化鎢奈米薄膜..................................41
3-4-4 光電致變色電池之組裝與量測......................42
3-5 分析與鑑定........................................44
3-5-1掃描式電子顯微鏡(Scanning electron microscope, SEM)
..................................................44
3-5-2 X光繞射分析儀(X-ray Diffraction,XRD)............45
3-5-3 紫外光-可見光吸收光譜儀(UV-Visible Absorption
Spectrometer)...................................46
3-5-4穿透式電子顯微(Transmission electron microscope,
TEM)............................................49
第四章 結果與討論.....................................50
4-1 氧化鎢薄膜之結構與電致變色性質....................50
4-1-1 氧化鎢薄膜之結構分析............................50
4-1-2 氧化鎢薄膜之電致變色性質........................52
4-1-3 染料敏化二氧化鈦電極............................53
4-2 不同圖案化氧化鎢電極對光電致變色電池性質之影響....56
4-2-1 以穿透光譜分析光電致變色特性....................56
4-2-2 以單一波長分析暗處褪色響應時間..................61
4-3 WO3/Pt圖案化光電致變色電池變色性質之探討..........65
4-3-1 氧化鎢層厚度之影響..............................65
4-3-2 Pt層厚度之影響..................................68
4-4 Pt對光電致變色電池性質之影響......................70
4-5 WO3/Pt圖案化光電致變色電池著褪色機制之探討........72
4-5-1 電池短路時之著褪色機制..........................73
4-5-2 電池於光照時之著褪色機制........................75
4-6 WO3/Pt圖案化光電致變色電池可靠度測試..............76
4-7 WO3/Pt圖案化光電致變色電池之供電與變色程度調節....77
第五章 總結論.........................................80
第六章 參考文獻.......................................82
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