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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 林唯芳 | |
dc.contributor.author | Wei-Che Yen | en |
dc.contributor.author | 顏唯哲 | zh_TW |
dc.date.accessioned | 2021-06-08T04:14:28Z | - |
dc.date.copyright | 2010-08-17 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-08-11 | |
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dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/22255 | - |
dc.description.abstract | 此研究主要目的為發展出用於高分子/奈米粒子太陽電池之導電高分子材料。這些材料依照其功能分成兩類:(a)構型的控制與(b)用於太陽能電池之新穎材料。
(a)構型的控制: 主要希望得到聚己烷噻吩-聚二吡啶乙烯嵌段式共聚物[Poly (3-hexylthiophe- ne)-b-Poly (2-vinylpyridine)]與二氧化鈦(TiO2)奈米粒子之高規則排列以提升太陽能電池之效率。另外,我們也合成了具有羧酸與胺類末端官能基之3HT寡聚物作為TiO2奈米粒子與硫化鉍奈米粒子之表面活性劑來增加太陽能電池的效率。我們用P3HT起始劑,陰離子聚合合成出具有不同組成的P3HT-b-P2VPs。其結構分別用電子顯微鏡(TEM)與小角X光繞射(SAXS)鑑定。隨著P3HT組成增加,其結構分別呈現出球狀、柱狀、層狀與條狀型態,其基本的相圖也藉由規則-非規則結構之轉移溫度(ordered-disordered transition temperature)定義出來。 我們研討不同nicotinic acid改質TiO2奈米粒子之濃度對於P3HT和P3HT-b-P2VP混摻複合材料在光學與型態上的影響。在P3HT-b-P2VP中。TiO2可選擇性地落於P2VP相中,不同結構的P3HT-b-P2VPs(球狀、柱狀、層狀)均顯示同樣的趨勢。然而純的P3HT混摻系統中則顯示出大範圍的聚集現象,其聚集區塊大小高達幾個微米等級(micrometer)。在低濃度之TiO2時,P3HT-b-P2VP可維持原有的奈米結構,反之在高濃度時,其規則結構會被破壞掉。在光學性質中,相對於純的P3HT混摻系統,P3HT-b-P2VP混摻系統展現較好的螢光削減效應(PL quenching),代表有良好的電荷分離。由TEM也觀察出P3HT-b-P2VP混摻系統有具有良好的分布型態(morphology)與分離的連續相可提供電荷傳導,由此可知P3HT-b-P2VP混摻系統具有可以提升太陽能電池效率的條件。材料的調配仍在進行中,希望可以找到最佳化的製備條件以達到良好的效率。 (b) 用於太陽能電池之新穎材料: 我們主要合成與鑑定合適的于體/受體交替共聚物(D-A alternating copolymer)以用於太陽能電池。首先,我們利用Suzuki coupling合成了一系列以茚芴(indenofluorene)為主的共聚物。茚芴具有共平面性的結構與良好的電荷傳導性質,其中與拉電子基團搭配所得之共聚物(在3.2.2標示為P3與P4)本身就有很好的螢光削減效應,也具有比較長波長的吸收,故有作為太陽能電池的潛力。 一系列含有不同芴(fluorene)與環戊噻吩(cyclopentaditiophene)組成之共聚物已利用Stille 偶合方法合成出來。跟純聚環戊噻吩之吸收光譜相比時,含有芴高分子之吸收光譜會有藍移現象。此外,此藍移現象會隨著芴在高分子中的濃度增加而增強。高分子的能隙可以分別調至1.72 eV與1.82 eV當在高分子分別加入25莫爾百分比與50莫爾百分比的芴時。同時,高分子的最高佔據軌域(HOMO)也如我們預期可隨著加入芴而明顯有降低現象以便可以增加太陽能電池之開路電壓值(Voc)。模擬的結果與實際實驗數據在光譜性質與電化學性質上有一致性的趨勢。藉由此簡單地改變高分子中的芴與環戊噻吩之組成,我們可以輕易的調整高分子之最高佔據軌域與能隙以便來提升太陽能電池效率。 另外,在TiO2太陽能電池中,我們探討了不同TiO2界面活性劑之改質對於元件效率的影響,使用的改質劑(modifier)分別有吡啶(pyridine)、Cu dye與具羧酸末端官能基之3HT(oligo-3HT-COOH)。其中,oligo-3HT-COOH改質TiO2的系統展現出最好的螢光削減效應與電池效率。另外,不同分子量的P3HT與oligo-3HT-COOH搭配對元件效率的影響在此也被探討。其中,最高效率為使用分子量30K P3HT之系統,此系統有較好的分布型態與電荷傳導平衡(balance of mobility),其元件效率數值分別為0.53 V(Voc)、4.79 mA/cm2(Jsc)、0.52(FF)與1.32%(PCE)。 | zh_TW |
dc.description.provenance | Made available in DSpace on 2021-06-08T04:14:28Z (GMT). No. of bitstreams: 1 ntu-99-D94549010-1.pdf: 5282125 bytes, checksum: 805c438524f35aba32e627dc1b143dc1 (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | Chapter 1 Introduction 1
1.1 Background 1 1.2 Research Objective 3 Chapter 2 Literature Review 8 2.1 P3HT based Block Copolymers 9 2.1.1 Chain Polymerization 9 2.1.2 Polymer Coupling Reaction 15 2.2 Block Copolymers Applied in Solar Cell 18 2.3 Low Band Gap Polymers 23 2.3.1 Fluorene Based Copolymers 23 2.3.2 Carbazole Based Copolymers 24 2.3.3 CPDT Based Copolymers 25 2.3.4 Thiophene Based Copolymers 26 2.3.5 BDT Based Copolymers 27 2.3.6 TPT Based Copolymers 28 2.3.7 DPP Based Copolymers 29 2.3.8 Summary 31 Chapter 3 Experimental 37 3.1 Chemicals 37 3.2 Synthesis 39 3.2.1. P3HT-b-P2VP Block Copolymer 39 3.2.1.1 Vinyl and Phenyl Terminated P3HT 39 3.2.1.2 P3HT-b-P2VP Block Copolymers 40 3.2.2 Indenofluorene Based Donor/Acceptor Alternating Copolymers 41 3.2.2.1 Monomer of Indenofluorene Based copolymers 41 3.2.2.2 Polymerization 54 3.2.3 Fluorene and Cyclopentaditiophene Based Donor/Acceptor Alternating Copolymers 56 3.2.4 TiO2 Nanocrystals 57 3.2.4.1 Nicotinic Acid Modified Nanoparticles (NA-TiO2 NPs) 57 3.2.4.2 Different Linkers Modified Nanorods 58 3.2.5 Carboxylic Acid Terminated P3HT (oligo-3HT-COOH) 59 3.2.6 Amine Terminated P3HT 61 3.3 Characterization 62 3.3.1 Chemical Structure Determination 62 3.3.2 Molecular Weight Determination 62 3.3.3 Self-assembly and Morphology 62 3.3.4 Optical Property 63 3.3.5 Electrochemical Property 63 3.3.6 Thermal Properties 64 3.4 Computer Simulation 64 3.5 Solar Cell Fabrication 64 Chapter 4 Results and Discussion 66 4.1 P3HT-b-P2VP Block Copolymer 66 4.1.1 Synthesis and Characterization of Macroinitiator: Vinyl and Phenyl Group Terminated P3HT 66 4.1.2 P3HT-b-P2VP block copolymers 67 4.1.2.1 Synthesis and Characterization of P3HT-b-P2VP Block Bopolymers 67 4.1.2.2 Morphology of P3HT-b-P2VP 71 4.1.2.3 Ordered-Disordered Transition and Phase Diagram of P3HT-b-P2VP 73 4.1.3 Effect of TiO2 Nanoparticles Addition on the Morphology of P3HT-b-P2VP 76 4.1.3.1 Nicotinic acid modified TiO2 NPs (NA- TiO2 NPs) 76 4.1.3.2 Morphologies of the Blend of Copolymer with NA-TiO2 NPs (Polymer-TiO2 NPs hybrid) 77 4.1.3.3 SAXS Studies of the Polymer-TiO2 NPs Hybrids 80 4.1.3.4 XRD Patterns of the Polymer-TiO2 hybrids 81 4.1.3.5 Optical Properties of the Polymer-TiO2 hybrids 82 4.1.3.6 Photovoltaic Properties 85 4.2 Indenofluorene Based Donor/Acceptor Alternating Copolymers (P1-P4) 90 4.2.1 Synthesis and Characterization of Alternating Copolymers P1-P4 90 4.2.2 Optical Propertie. 92 4.2.3 Electrochemical Properties 102 4.2.4 Thermal stability 103 4.3 Fluorene and Cyclopentaditiophene Based Donor/Acceptor Alternating Copolymers 106 4.3.1 Synthesis and Characterization of Alternating Copolymers 106 4.3.2 Optical and Electrochemical Properties 108 4.4 Carboxylic Acid Terminated Oligomer 3HT 115 4.4.1 Characterization of Oligo-3HT-COOH 115 4.4.2 Solar Cell Fabricated from TiO2 Nanorods Modified with Different Linkers 118 4.2.2.1 Morphology of TiO2 Nanorods Modified with Different Linkers 118 4.2.2.2 Optical Properties 120 4.2.2.3 Device Performance 123 4.5 Synthesis and Characterization of Amine Terminated Oligo-3HT 126 Chapter 5 Conclusions 128 Chapter 6 Recommendation 131 References 133 Appendix 145 | |
dc.language.iso | en | |
dc.title | 用於高分子/二氧化鈦混成太陽能電池之新穎高分子的合成與物理性質 | zh_TW |
dc.title | Synthesis and Physical Properties of Novel Polymers for Polymer-TiO2 Hybrid Solar Cells | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-2 | |
dc.description.degree | 博士 | |
dc.contributor.oralexamcommittee | 戴子安,趙基揚,楊吉水,邱文英 | |
dc.subject.keyword | 噻,吩,二氧化鈦,型態,太陽能電池,芴,能階結構, | zh_TW |
dc.subject.keyword | thiophene,fluorene,indenofluorene,conjugated polymers,TiO2,solar cell, | en |
dc.relation.page | 149 | |
dc.rights.note | 未授權 | |
dc.date.accepted | 2010-08-12 | |
dc.contributor.author-college | 工學院 | zh_TW |
dc.contributor.author-dept | 高分子科學與工程學研究所 | zh_TW |
顯示於系所單位: | 高分子科學與工程學研究所 |
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