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研究生:王宏琪
研究生(外文):Hung-Chi Wang
論文名稱:以液相沉積法成長二氧化鈦電致變色膜
論文名稱(外文):Study of TiO2 Electrochromic Films Prepared by Liquid Phase Deposition
指導教授:李明逵
指導教授(外文):Ming-Kwei Lee
學位類別:碩士
校院名稱:國立中山大學
系所名稱:電機工程學系研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2004
畢業學年度:92
語文別:英文
論文頁數:70
中文關鍵詞:電致變色二氧化鈦
外文關鍵詞:ElectrochromicTiO2
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電致變色以外加電場,使離子注入物質之中讓物質產生顏色變化,進而影響物質對於光的穿透能力,此種變色方式稱之為『電致變色』。由於具有光電方面之應用,目前許多工業界與學術界投入研究之中。在1974年,由Inoue發現二氧化鈦具有電致變色性質。
本篇論文的目的主要是探討利用液相沉積法成長二氧化鈦膜,探討電致變色的能力。利用液相沉積法在透明導電玻璃基板上成長二氧化鈦膜,其過程簡單、成本低廉、而且成長溫度低 (40 ℃),因此值得廣泛研究與討論。利用掃描式電子顯微鏡 (SEM)、拉曼光譜(Raman Spectroscopy)、紫外光可見光譜,探討薄膜的特性,並由實驗結果顯示最大穿透率變化量為45%。
TiO2 is a fascinating material proving its usefulness in a wide range of applications. In catalytic and electrochemical applications, it has been utilized as a stable semiconductor electrode for the conversion of solar energy into chemical or electrical energy. Especially, the cleavage of water over TiO2 using light energy is well known. The degradation of organic pollutants present in waste water, using irradiated dispersions of TiO2, is a fast growing field in basic and applied research. One can also mention that the use of TiO2 in pigments sun lotions and toothpastes and its biocompatibility. The EC phenomena of TiO2 had been reported first by Inoue et al., who produced the films by hydrolysis of titanium tetraoxide. The film show cathodic coloration and turned dark blue.
The LPD-TiO2 film deposited at 40 ℃ with (NH4)2TiF6 for 0.1 M and 0.2 M for boric acid. The films were transparent in visible range and can be colored in a solution 1M LiClO4 + propylene carbonate. The deposition rate can be controlled perfectly about 43 nm/h. The 270-nm thickness LPD-TiO2 film gives the best transmittance difference at 550 nm.
CHAPTER 1 1
INTRODUCTION 1
1-1 BACKGROUND OF ELECTROCHROMIC 1
1-2 APPLICATIONS OF ELECTROCHROMIC DEVICE 3
1-3 RECENT ELECTROCHROMIC DEVICE TECHNOLOGIES AVAILABLE 4
1-3-1 Solution phase electrochromics 4
1-3-2 Electrochromic devices incorporating solid electrochromic films 6
1-3-3 Ion storage layer devices 7
1-3-4 Devices containing both anodic and cathodic electrochromic layers 9
1-3-5 Electrochromic devices incorporating solution phase redox promoters 10
1-4 TITANIUM DIOXIDE 11
1-5 MOTIVATION OF LPD-TIO2 12
1-6 BACKGROUND OF LPD 13
1-7 MECHANISMS OF LDP-TIO2 14
1-8 ADVANTAGE OF LPD 14
CHAPTER 2 15
EXPERIMENT 15
2-1 CURRENT COMPONENTS USED IN ELECTROCHROMIC CELLS 15
2-1-1 Transparent conductors 15
2-1-2 Cathodic films 16
2-1-3 Electrolytes 18
2-2 LIQUID PHASE DEPOSITION SYSTEM 20
2-3 DEPOSITION PROCEDURES 21
2-3-1 ITO-coated glass Cleaning Procedures 21
2-3-2Photoresist coated 21
2-3-3 Preparation of Deposition Solution 22
2-3-4 Film Growth 23
2-4ANNEALING TREATMENT 23
2-5CHARACTERISTICS 23

2-5-1 Physical Property 23
2-5-2 Chemical Property 24
2-5-3 Electrochemical Property 24
2-5-4 Optical Property 25
CHAPTER 3 26
RESULTS AND DISCUSSION 26
3-1 ELECTROCHROMIC REACTION 26
3-2 PHYSICAL PROPERTIES OF LPD-TIO2 FILM 27
3-2-1 Deposition of LPD-TiO2 Film 27
3-2-2 SEM view of LPD-TiO2 Film 28
3-3 OPTICAL PROPERTIES 28
3-4 CHEMICAL PROPERTIES OF LPD-TIO2 29
3-4-1 Analysis of Raman Spectra 29
3-4-2 Analysis of XPS Spectra 30
3-5 SUMMARY 30
CHAPTER 4 32
CONCLUSIONS 32
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