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論文名稱 Title |
以液相沉積法成長二氧化鈦電致變色膜 Study of TiO2 Electrochromic Films Prepared by Liquid Phase Deposition |
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系所名稱 Department |
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畢業學年期 Year, semester |
語文別 Language |
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學位類別 Degree |
頁數 Number of pages |
70 |
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研究生 Author |
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指導教授 Advisor |
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召集委員 Convenor |
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口試委員 Advisory Committee |
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口試日期 Date of Exam |
2004-07-26 |
繳交日期 Date of Submission |
2004-07-28 |
關鍵字 Keywords |
電致變色、二氧化鈦 Electrochromic, TiO2 |
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統計 Statistics |
本論文已被瀏覽 5699 次,被下載 29 次 The thesis/dissertation has been browsed 5699 times, has been downloaded 29 times. |
中文摘要 |
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%。 |
Abstract |
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. |
目次 Table of Contents |
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 |
參考文獻 References |
[1] C. G. Granqvist, “Handbook of Inorganic Electrochromic Materials, 1995 [2] Lynam, N.R.; Agrawal, A. Large Area Chromogenics: Materials & Devices for Transmittance Control, Lampert C.M.; Granquist, C.G., eds., SPIE, Optical Engineering Press, Bellingham, Washington, p. 46, 1989 [3] Varaprasad, D.V.; Lynam, N.R.; Habibi, H.R.; Desaraju, P. U.S. Patent 5, 725, 809, 1998 [4] Byker, H.J.; Srinivasa, R. U.S. Patent 5,770,114,1998 [5] Byker, H.J. U.S. Patent 5,751,467, 1998 [6] Van Dine, J.E.; Parkhe, V.D.; Klein, L.C.; Trumbore, F.A. U.S. Patent 5,699,192, 1997 [7] Lefrou, C.; Defendini, F.; Garot, F.; Marrot, O. U.S. Patent 5,663,829, 1997 [8] Ellis Jr., F.B.; Van Dine, J.E.; Parkhe, V.D. U.S. Patent 5,757,537, 1998 [9] Defendini, F. U.S. Patent 5,379,146, 1995 [10] Nagai, J.; Seike, T. U.S. Patent 5,721,633, 1998. [11] Kamimari, T.; Nagai, J.; Mizuhashi, M. U.S. Patent 4,671,619, 1987 [12] Honda, K.; Fujishima, A. Nature 1972, 238, 37 [13] E. Inoue, H. Kokado and A. Izawa: Oyo Buturi 43 (1974) 54 [in Japanese] [14] T. Ohsuku and T. Hirai,” An electrochromic display based on titanium dioxide,” Electrochimica Acta, Vol. 27, pp.1161-1349, 1982 [15] Nilg |
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