博碩士論文 952906008 詳細資訊




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姓名 王聖凱(SHENG-KAI WANG)  查詢紙本館藏   畢業系所 光電科學與工程學系
論文名稱 以Sol-Gel法製備高濃度TiO2用於染料敏化太陽能電池光電極之特性研究
(Study of characteristics of Dye-sensitized solar cell electrode with high concentrated TiO2 produced by Sol-Gel method)
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摘要(中) 二十一世紀的今天,全世界正面臨著能源危機的問題,科學家們正在努力的尋找替代能源,期望能解決這個問題。其中,太陽能電池為最被看好的替代能源之一。本研究的目的為利用溶膠凝膠法製備奈米級二氧化鈦光電極,並分析染料敏化太陽能電池之效能。實驗的方法採用「溶膠凝膠法」,前驅物為金屬鹽類「四氯化鈦」,利用旋轉塗佈的方式製作出奈米級二氧化鈦薄膜,製備染料敏化太陽能電池之透明電極。溶膠凝膠法在加熱過程中,我們利用光強穿透率間接找出最佳的加熱時間,以DLS、XRD得知在加熱13個小時的TiO2粒子擁有最小的粒徑約35nm,且有銳鈦礦的結晶產生。染料敏化太陽能電池效率分析部份,我們採用三種方式製作透明光電極。兩組以Sol-Gel塗佈,一組以Sol-Gel混合商用P-25粉體,膜厚依序為:117.2 nm、459.4 nm、2 μm。結果顯示以Sol-Gel混合商用P-25粉體效率最高,且發現此方式可以很穩固的固定在基材上。
摘要(英) Today, in twenty-first century, the whole world currently faces the energy crisis and scientists are exerting themselves to solve it by seeking alternative energies. Among all the alternatives, the solar cell is the most promising one. The purpose of our research is to make solar electrode of nano-scale TiO2 (Titanium dioxide) by Sol-Gel method and to increase the efficiency of Dye-sensitized solar cell(DSSC). This processing used Titaniumchlorid (TiCl4) forerunner to manufacture TiO2 coating liquid. The spin coating method is taken to produce the nano-scale TiO2 thin film which can be used to make DSSC. During the heating process of Sol-Gel method, the transmittance of light intensity is utilized to find heating time which gives the best result. By measuring through DLS and XRD, we can have TiO2 particles whose size with an average of 35nm at a heating time of 13 hours and the crystallized anatase will be produced. For the analysis of efficiency of DSSC, three ways are adopted to fabricate transparent photoelectrodes while two methods are based on Sol-Gel spin coating and the other one mixes commercial P-25 power with Sol-Gel. The membrane thicknesses of three methods are 117.2nm, 459.4nm and 2um, respectively. The result demonstrates that the Sol-Gel mixed with commercial P-25 powder having the highest efficiency and can be firmly attached to the base material.
關鍵字(中) ★ 二氧化鈦
★ 染料敏化太陽能電池
★ 電雙層
★ 散射
★ 廷得耳
★ 溶膠凝膠
關鍵字(英) ★ Tyndall
★ Electrical double layer
★ DSSC
★ TiO2
★ sol-gel
★ dye-sensitized solar cell
論文目次 摘要 ……………………………………………………………………I
Abstract………………………………………………………………II
致謝 …………………………………………………………………III
目錄……………………………………………………………………IV
圖目錄…………………………………………………………………VI
表目錄………………………………………………………………VIII
第一章 前言
1-1 研究動機與目標……………………………………………1
第二章 研究背景
2-1-1 TiO2特性 …………………………………………………4
2-1-2 nano –TiO2光觸媒材料的光反應制……………………7
2-2溶膠-凝膠法 (Sol-Gel) ………………………………………10
2-2-1 溶膠-凝膠製程與原理……………………………………10
2-2-2 溶膠-凝膠奈米微粒之光學性質…………………………12
2-2-3溶膠-凝膠製程的優缺點 …………………………………17
2-2-4影響TiO2溶膠-凝膠反應速率的因子 ……………………18
2-2-5 動態散射光粒徑分析 (DLS) ……………………………19
2-3 染料敏化太陽能電池的概述 …………………………………21
2-3-1 DSSC基本組成結構及工作原理 …………………………21
2-3-2 透明導電玻璃 ……………………………………………24
2-3-3 TiO2光電極的製備 ………………………………………25
2-3-4 染料(Dye)…………………………………………………27
2-3-5 電解液(Electrolyte)……………………………………29
2-3-6鉑(Pt)對電極………………………………………………29
2-4太陽電池總效率的計算…………………………………………30
第三章 實驗儀器與實驗分析方法
3-1 製備奈米級TiO2光觸媒結晶懸浮液…………………………33
3-2 高濃度TiO2 sol-gel之加熱時間與粒徑變化及晶相生成實驗 …………………………………………………………………………35
3-3高濃度TiO2 sol-gel之光觸媒效率……………………………41
3-4 TiO2光電極薄膜製備與分析 …………………………………48
3-5 DSSC的組裝與特性分析 ………………………………………52
第四章 結論與未來工作
4-1結論………………………………………………………………62
4-2未來工作…………………………………………………………66
參考文獻 ………………………………………………………………67
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指導教授 張榮森(Rong -Seng Chang) 審核日期 2010-1-28
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