臺灣博碩士論文加值系統

近年來變色玻璃受到廣泛的關注，氧化釩(Vanadium Oxide)是個眾所皆知的變色材料，另外在變色玻璃領域中具有良好的變色效果。然而此類型的變色材料在電致變色相關機制的研究鮮少受到討論。本篇論文利用溶膠凝膠法製作出不同的薄膜，此製程方法具有大規模生產的的優勢。利用場發射掃描式電子顯微鏡和X光繞射光譜觀察薄膜厚度、形貌、晶體結構等。而光學性質則是利用紫外-可見光光譜儀來測量。電化學性質是由循環伏安法來測定。結果顯示，鉬修飾五氧化二釩比五氧化二釩具有較優異的變色效率，其原因為結構中的對稱性改變讓變色反應更有效率。原位 X 光吸收光譜用來研究原子和電子的結構，並說明電致變色轉換的機制。從研究結果顯示，氧化還原反應的速度與六配位釩結構中心原子位置的對稱性有緊密的關連，本研究中可以提供於電致變色薄膜的智慧玻璃製造過程有重要進展。

Electrochromic switching devices have attracted considerable attention because these thin films are the most promising materials for energy-saving in green building application. The vanadium oxide system is simple and inexpensive because only a single-layer film of this material is sufficient for coloration. The film thickness. morphology, and crystal structure were determined by scanning electron microscopy and x-ray diffraction. The optical property was characterized by UV-Vis spectroscopy. The electrochemical properties were determined by cyclic voltammetry. The results show that the Mo-modified V2O5 thin film exhibits better coloration rate than as-made one which can be attributable to the changes of local atomic symmetry and electronic structure. In situ/operando X-ray absorption spectroscopy was used to track the evolution of atomic and electronic structures under electrochromic coloration to elucidate the color switching mechanism. This study may provide important process for the fabrication of electrochromic films for energy-saving windows or other useful electronic devices.

第一章 緒論​1
1.1 前言​1
1.2 研究目的​3
第二章 研究背景與原理​4
2.1 電致色變(Electrochromic)文獻與原理​4
2.1.1電致色變(Eletrochromic)元件​8
2.2 氧化釩材料特性​10
2.2.1 五氧化二釩(V2O5)簡介​11
2.3 溶膠凝膠法(Sol-Gel)​12
第三章 實驗步驟與方法​13
3.1 實驗步驟​13
3.2 五氧化二釩薄膜之製備​14
3.3 電致色變(Electrochromic)In situ裝置​16
3.4 SEM分析​17
3.5 紫外光-可見光光譜分析​20
3.6 XRD分析​22
3.8 恆電位儀​23
3.7 X光吸收光譜分析介紹​24
3.7.1 XAS分析介紹​24
3.7.2 XAS分析量測原理​27
第四章 實驗結果與討論​31
4.1電致變色五氧化二釩以及修飾五氧化二釩著色過程與褪色過程​31
4.1.1 SEM分析結果​31
4.1.2 紫外光-可見光光譜分析結果​34
4.1.3 XRD分析​38
4.1.4 電化學分析​41
​42
4.1.4 in-situ XAS 分析​44
4.2電致變色100次循環五氧化二釩以及修飾五氧化二釩著色過程與褪色過程​53
4.2.1 可見光穿透光譜分析結果​53
4.2.2 XRD分析​58
4.2.3 電化學分析​59
4.2.4 in-situ XAS 分析​61
第五章 結論​65
參考文獻​67

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