臺灣博碩士論文加值系統

本論文是以靜電紡絲法製備二氧化鈦奈米纖維(TiO2 NF)，以不同粒徑與組成之商用P25 TiO2、P60 TiO2與TiO2 NF混摻物為漿料，利用網印法，將其塗佈於氧化銦錫聚萘二甲酸乙二醇酯(ITO-PEN)基板上以形成TiO2多孔層(TiO2-PL)，並利用濺鍍法，於ITO-PEN基板上濺鍍TiO2以作為緻密層(TiO2-CL)，藉此製成具不同結構設計的TiO2光陽極，同時以Pt-ITO-PEN為對電極，藉由三明治構裝技術，組成可撓式太陽能電池(TiO2-PL-ITO-PEN/N719/Pt-ITO-PEN或TiO2-PL-TiO2-CL-ITO- PEN/N719/Pt-ITO-PEN SC)。結果顯示，當P25 TiO2 混摻入粒徑較大的P60 TiO2或高長徑比TiO2 NF時，雖能提昇光陽極的光散射效率，但因TiO2-PL比表面積的減少，使染料吸附量下降，導致整體光轉換效率(η)由1.238降至1.056 %。含TiO2-CL與TiO2-PL之光陽極，雖能抑制暗電流的發生，使Voc由0.640提昇至0.680 V，FF由0.535提昇至0.670，但因降低了光陽極之透明度，使Jsc反而由3.616降至2.420 mA/cm2。

In this study, we fabricated the photoanodes of different structures in the flexible dye-sensitized solar cells (TiO2-PL-ITO-PEN/N719/Pt-ITO -PEN or TiO2-PL-TiO2-CL-ITO-PEN/N719/Pt-ITO-PEN SC) by using sandwich assembling technique. The TiO2 compact layer (TiO2-CL) was first deposited on the ITO-PEN by radio frequency sputtering. The titanium dioxide nanofiber (TiO2 NF) was fabricated by electrospinning. The binder-free TiO2 pastes were prepared by mixing TiO2 NF and different weight ratios of commercial P60 TiO2 and P25 TiO2. The porous TiO2 layer (TiO2-PL) was coated on TiO2-CL-ITO-PEN by screen printing with the pastes. The results revealed that the light scattering effect was improved due to the large particle size of P60 and the high path length ratio of TiO2 NF; however, the surface area decreased as well. Since that smaller surface area caused the less amount of dye adsorption, the overall power conversion efficiency decreased from 1.238 % to 1.056 %. In addition, we found that TiO2-CL provide blocking effect to reduce the dark current and enhance both open voltage (Voc) and fill factor (FF). The Voc is increased from 0.640 to 0.680 V and FF is increased from 0.535 to 0.670. The lower transmittance of photoanodes caused the Jsc decreased from 3.616 mA/cm2 to 2.420 mA/cm2.

目錄
摘要 I
ABSTRACT II
誌謝 IV
表目錄 VIII
圖目錄 IX
第一章、緒論 1
1-1 前言 1
1-2 研究動機與目的 4
第二章、文獻回顧 6
2-1 太陽能電池之介紹 6
2-2 染料敏化太陽能電池 10
2-2-1 DSSCs之結構及其工作原理 10
2-2-2 透明導電基板 15
2-2-3 多孔層奈米二氧化鈦電極 18
2-2-4 染料敏化劑 21
2-2-5 電解質 25
2-2-6 對應電極 27
2-3 光陽極之低溫製備 29
2-4 光散射效應 32
2-5 濺鍍原理 34
2-5-1 直流濺鍍機(DC Sputter)與射頻濺鍍機(RF Sputter) 34
2-5-2 濺鍍技術應用於DSSCs 35
2-6 靜電紡絲 36
2-6-1 靜電紡絲原理 36
2-6-2 靜電紡絲技術應用於DSSCs 39
2-7 太陽能電池電流電壓特性 42
第三章、實驗程序 51
3-1 實驗材料與藥品 51
3-2 實驗相關設備 54
3-3 實驗步驟 58
3-3-1 靜電紡絲TiO2 NF之製備 58
3-3-2 TiO2-CL之製備 60
3-3-3 TiO2-PL之製備 62
3-3-4 對應電極之製備 64
3-3-5 FDSSCs之製備 66
3-3-6 染料吸附量之測定 67
3-4 性質測定 68
第四章、結果與討論 70
4-1 ES法製備TIO2 NF及鑑定分析 70
4-1-1 PAN NF的製備 70
4-1-2 PAN/TiO2 NF的製備 73
4-1-3 PAN/TiO2 NF鑑定與分析 75
4-2 TiO2-PL組成對FDSSCs之影響 82
4-2-1 不同組成TiO2漿料及網印層數對FDSSCs之影響 82
4-2-2 不同組成之P25-29漿料對FDSSCs光伏性質的影響 87
4-2-3 不同結構P25-29漿料對FDSSCs光伏性質的影響 92
4-3 TiO2-CL對FDSCCs光伏性質的影響 97
第五章、結論 102
第六章、參考文獻 103

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